Category Archives: compaq 420 keyboard

Instructions to buy laptop power adapter

As a family of books , is an important accessory power adapter , power adapter when purchasing everyday , we will always meet original and non-original price difference is more, this time on how to choose? This article will briefly introduce our Things to know when the optional power adapter . In looking for your help .
Tools / materials
Computer power adapter of the same nominal voltage, output current of the power supply voltage adapter can pass the same , the output current is different, can not be used on the same books . The basic principle is that a large nominal current of the power supply can replace a small nominal current of the power supply. Estimated that someone would think so , I feel great nominal current of the power will burn the books , because the current big thing. In fact, much the same voltage current situation depends on the load , Oh, think of junior high school physics know . When the books when the high-load operation , the current bigger, when the books go into standby , the current is smaller, a large nominal current of the power supply has sufficient current margin. Conversely, someone with 56w 72w power supply instead of using them is also no problem , because the power adapter is usually designed to leave a margin , load power must be less than the power supply , so this instead of general use is feasible, but the rest of the power headroom rarely , once you pick up a lot of books peripherals, such as two usb hard drive, then cpu running at full speed , then there is a base, a CD-ROM drive at full speed to read the disk , plus the same time charging the battery, estimated to be dangerous , you should feel free to feel power is not already boiled eggs. So it is best not to use a small electric current instead of high-current power supply .

Laptop battery charge does not go how electricity is going on? acer keyboard,dell keyboard

The battery discharges to 0V, and then shut down the state to charge 12-20 hours if your battery is not completely damaged, it should be able to charge into electricity.

Laptop battery itself has a number of uses (lithium is basically 800 times) and aging factors such restrictions, if it is seriously damaged, then only two ways resembles the:

First, in the case of the use of an external power supply; However, if in the case of an external AC power supply to ensure the best stability, with a total power failure has unplugged the computer itself will certainly damage, voltage instability, always boot off too frequently bad, just the total flash lamp will burn is a reason.

Second, configure a new battery, though not original, and can be properly maintained, then it should also be used for a long time.

Purely personal opinion, because I’m trying to get my laptop battery live longer, so check a lot of things, but it does not guarantee the absolute authority in general should be like this.

 

Laptop no sound how to do?

First check the sound card driver , right-click My Computer – Properties – Hardware – Device Manager – Sound video and game controllers – right click – ReaItek – update or scan , uninstall reinstall . ( If no driver package to download Driver Genius – Driver Update – voice, video – to start the update – asked for the appropriate driver – Restart the computer )

2 Commissioning microphone : Control Panel – High Definition Audio Configuration – Mixer – replay – a small wrench – Select – OK – the right to pull > it – Rear pink In – play X mute, the rest of the full push up ; such as a microphone plugged on the front panel and then hit X mute the microphone volume , and then point the audio I/O– small wrench – Select disable front panel jack detection – OK – returns mixer – recording – a small wrench – Select – OK – Click on the microphone volume ( version inconsistencies need to play X mute the stereo mix )

(3) strengthen the microphone: Right-click the bottom right corner of a small speaker ( small speaker volume pushed ) – Adjust Audio Properties – Volume – Equipment Volume – Senior – ( master volume full push to ) – Options – Properties – microphone volume tick – OK to return to options – Advanced Control – senior – microphone strengthen the hook.

4 lower right corner of the small speakers display method : Start — Settings — Control Panel — Sounds and Audio Devices — Volume – ( tick ) the volume icon in the taskbar.

5 pages without sound methods of operation: open web – Tools – Options – Advanced – ( tick ) Play sounds in Web pages .

6 Game headphones sound great way to : Control Panel — High Definition Audio Configuration – Audio I/O– headset – choose 8CH Speaker .

7 front panel jack debug : Control Panel – High Definition Audio Configuration – Audio I/O– simulation – Rear Panel – Tap Jack icon – which you insert the device ? ( Need to plug devices such as plug headphones ) – Select Headset – OK, so

8 Using QQ chat language when you can not adjust the volume of MIC , please download the patch .

9 If the sound card driver is not installed on Solution: Control Panel – Administrative Tools – Services – Windows Audio – startup type is set to “Auto” and then start it.

10 registry modification method :

I. Start – Run – type regedit to open the registry, in order to open the HKEY_LOCAL_MACHINE \ SOFTWARE \ Microsoft \ Windows \ CurrentVersion \ Run In the right window of its new string “Systray” ( on the right point in the Run New ) key ( in Double-click on the Systray editor ) as “c: \ windows \ system32 \ Systray.exe”, win2000 system was “c: \ winnt \ system32 \ Systray.exe”

Second Start – Run – type regedit to open the registry, in order to open the HKEY_LOCAL_MACHINE \ SOFTWARE \ Microsoft \ WindowsNT \ CurrentVersion \ Drivers32 create a new string value named “wavemapper” value “msacm32.drv”. Restart the computer .

CPU in the computer will generate heat during operation how to do

CPU in the computer will generate heat during operation , if not the heat , with the heat accumulation caused by burn CPU. So you need to configure the cpu fan heat fan, fan to speed up air flow through the heat timely dissemination . Cpu fan and heat sensor, when the temperature reaches a set region , by adjusting the fan speed sensor , so that the CPU temperature is maintained at a reasonable range.

How much cpu speed normal ?

Because there is a heat sensor cpu above , at different temperatures so cpu speed it is not the same , the general cpu temperature is normal, the speed at 2000-2500 rpm / min or so, there are a number of high-profile users to play games , so cpu temperature on will increase , which could reach beyond the scope of your cpu above 60 degrees Celsius , the same cpu fan will reach 5000 rpm / min. However, in this case the fan is also considered normal. So the specific values ​​of the fan speed is not an accurate value , it is mainly based on the needs of the environment and the user have a great relationship .

Secondly cpu temperature is also associated with voltage . Why? Because the cpu temperature is the heat with the computer power is to measure the size , power and decided to have a relationship with the size of the voltage , if the computer is too low, the heat is small, but when the computer overclocking when the voltage is too small unknown fault occurs . If the voltage is too high, excessive heat , so that the cpu temperature is too high, it will seriously burned to the cpu phenomenon. So we are very difficult to control the voltage , set high, word within the radiator , set low , CPU word within easy BSOD and other unknown fault . But normal circumstances we do not need to worry about the relationship between temperature and voltage cpu , in normal circumstances, the impact is small.

cpu fan speed is not normal how to do ( Editor’s Choice : cpu fan speed is slow how to solve ) ?

cpu fan speed is not normal, then certainly with the cpu temperature is not off the relationship . When the cpu is too high so , cpu speed will reach a very high speed, so we found the bios set by the cpu speed exceeds a certain value, resulting in cpu speed is not normal. But in general the cpu speed of 5000RPM is normal , if your speed range , then here is a little effect.

How do computer keyboard failure

Computer keyboard is one of the most commonly used computer input devices in the device , but also that you use most frequently used devices. Due to frequent use computer keyboard , computer keyboard case so often occurs in the failure of the course . Today and share with you after the failure of a computer keyboard solution .
Tools / materials
• U disk, keyboard cleaner with a soft brush , blow up balloons
The case of a desktop computer keyboard failure
Typically computer keyboard failure following two situations:
Percussion keyboard keys without display
After you open a word processing software, or other editors , whether you enter any character on the keyboard , the display did not have any display .
Keyboard input and screen display inconsistent characters
The letters on your keyboard to enter letters in the display and no correspondence or enter a numeric character is displayed .
Desktop computer case one of the processing methods and procedures
Check that the keyboard was electric
Press the button on the left side of the keyboard Caps Lock key to toggle the case , observe the indicator lights on the keyboard Caps are lit. If you can light up , indicating that your hardware keyboard may have been broken. If the keyboard does not light up to show that you are either bad or is connected with the host computer is bad , the keyboard has no power .
Check the keyboard connection interface with the host computer to determine whether good contact
The keyboard connected to the computer with a USB cable to the host computer ‘s USB host interface reseated , because behind the host desktop computer has multiple USB ports , you can also change a USB port to connect to see if good contact.
Tips: For some older models, if your keyboard is a PS2 connector cable
Please note that there is breakage or PS2 interface is inserted in the wrong location, such as the PS2 keyboard connector mouse connector found on the PS2 interface.
Reconnect after test
Reconnect often step 2 is basically to ensure that the contact with the host computer ‘s keyboard to normal. Now you can open a word processing software on your computer , the editor using the keyboard to enter a few characters to see if there is display . If normal , Congratulations you have successfully processed keyboard failures , otherwise proceed to the next step. Detection host interface is normal
If you do this step , then the probability of your keyboard is usually broken relatively large, but first do not arbitrary, we test the interface to the host computer to a conclusion. Find a usb device , such as U disk . We put it into the computer interface, see if you can use a normal , if normal use , it indicates that your keyboard is broken, you can replace a new keyboard , otherwise the normal description of the keyboard , your computer system or system has a problem , you need professionals to deal with , not repeat them here .
Desktop computer case two processing methods and procedures
This happens usually indicates the host computer keyboard is connected properly , but the keyboard has a problem , the following approach :
The case of letters and numeric keypad keys function key failure
If the result of the case or the numeric keypad keys failure leads to inconsistent input display , you can check -sensitive switch key left of the keyboard Caps Lock key , Shift key and right key NumLock key functions are normal switch. Sometimes due to the frequent use of these function keys , conductive rubber keyboard will not work under the keyboard bounce caused by failure occurs, you can check this cap if these keys keyboard is always jammed due to abnormal reasons resulting in the pressed state failure. In this case you can manually toggle the appropriate keys to reset it repaired.
A character repeated failures occur and the surrounding joint letter
For the above phenomenon , usually because a key bit is always stuck in the pressed state and neighboring keys associated with conductive rubber is in contact so that the keyboard intermittent failures . In this case , you can use your fingers for the occurrence of the failure of some of the keys to repeatedly reset button or pressing all the keys back again, has made the keyboard to normal.
Tips: Of course, because the glass down on the keyboard because the tea spilled on the keyboard will cause the keyboard part failure, this time with the host should disconnect the keyboard and the keyboard upside down to dry after the water is drained normal use, for water keyboard because scuppers ( slot ) is disordered upside down, just the keyboard to scupper ( slots ) can be tilted . Failure to display a character missing for such a situation , usually because the keyboard dust or debris from entering the internal keyboard snacks hinder conductive rubber metal contact with the circuit board under the contact of the keys can not enter the letters displayed . For this situation, you can use the keyboard cleaner with a soft brush , blow up balloons carried on the keyboard slot blowing dust blown debris to solve the problem , if the above method can not solve the problem, disconnect the keyboard and the host computer inverted keyboard, after beating aligned , reconnect it to work . Keyboard Keyboard garbled garbled phenomenon more annoying , this situation usually only one way you can try , and that is disconnected from the host computer keyboard , and then reconnect the keyboard to see if return to normal. If reconnect still fail, then you do not hold what hope. Such cases are usually garbled keyboard chip failures caused , we are not equipped to handle , you will get a new keyboard now . Laptop keyboard case malfunctioning laptop keyboard failure common approach is basically similar with the desktop , can be resolved by the above method . For some specific cases need to look at the following steps: a small part of the letter keys keyboard replacement laptop keyboard because the space is smaller than the average desktop keyboard, so it has some function keys are function keys with the Fn key to the achievement of certain specific functions , such as digital key alternative  M key cases, this is often not understood by everyone , and mistakenly thought it was a keyboard failure, in fact, the simplest way is to look at the bottom of the digital display light is lit. Once the indicator light indicates the numeric keypad zone is active, there is no doubt , M These keys are replaced with the numeric keys . You just need to hold down the left side of the keyboard area key and function keys at the top right to switch back and forth . External keyboard for half past one would not handle the keyboard failure fault , you can find an external keyboard via USB connection is a pressing problem . Especially when large quantities of digital inputs , it is strongly recommended that an external keyboard input more convenient. Soft keyboard for keyboard failure of emergency law and does not solve the case of an emergency spare keyboard on hand , we can use the soft keyboard with the mouse to the emergency , input method here an example to introduce a mouse click on the to the right of the “Language Bar” button or by Ctrl + Shift keys to bring up the input method state . As shown in the pop-up state , use the mouse to click on the soft keyboard button, as shown in Figure red box right-click the mouse button , make sure the PC keyboard options , as shown otherwise, your soft keyboard with mouse point out that other characters, you will think garbled. Figure on the following pop-up soft keyboard , you can use the mouse to click on the appropriate button to enter characters , methods, and the use of a physical keyboard is the same, not repeat them here . Of course, if you want to close the soft keyboard only need to click on the soft keyboard input method button on the status bar again.

Оценивать мастерство ноутбуков производительности

Сравнить ноутбуки просто не может говорить о достоинствах размера конфигурации. В этой статье , продажи ноутбуков перечислены в соответствии с оборудования, программного обеспечения и обслуживания международного списке стандартного , описывается как методов оценки ноутбук производительности компьютера . Готов пользователей ноутбуков в оценке , когда есть достаточная техническая убедительным.

1 , Процессор:

По сравнению с настольным процессором , Мобильный процессор с большей производственных процессов , пожалуйста ». Ноутбуков выделенным процессором энергосберегающие технологии “, текст , в дополнение к ноутбуков , посвященных процессора при помощи специальной технологии TCP упаковки , потому что оба обязаны получить мобильный производительность процессора и низкое энергопотребление требования потребления.

Хотя некоторые поставщики утверждают, что использовать в блокнот над технологии настольных CPU созрел , но, несомненно, отличается от технического содержания той же частоте процессора , настольных и мобильных , компонент стоить намного хуже. Мобильные машины CPU будут включены с соответствующей технической знака , в то время как ничего Некоторые ноутбуки настольных процессора , чтобы заявить в момент покупки , поэтому мы должны понять, как сердце производительности ноутбука.

2 , жесткий диск :

Относительно настольных жестких дисков , жестких дисков ноутбуков должен иметь хорошую ударопрочность , которая будет непосредственно влиять на безопасность данных. В этой области жестких дисков ноутбуков , оставив только IBM одного шоу. В настоящее время популярные ноутбуки выше, чем 10G . Максимально доступное для 48G . О его технических параметров , много марок компьютеров установлен один редко , описанный , например, числа оборотов (RPM) , спецификаций интерфейсов ATA . Нынешний P4 основной компьютер был использован для поддержки высокой производительности 5400 ATA5 жесткий диск ноутбука .

3 , дисплей:

Нынешние ноутбуки приняли True Color ( TFT ) структуру ЖК , отметить, что мы должны не только признать размер экрана , игнорируя при этом разрешение. Формальное различие : SVGA (800×600 ) XGA (1024×768) SXGA (1400×1050) UXGA (1600×1200) . Есть также некоторые нестандартное разрешение : UWXGA (1024×480) WXGA (1152×768) . Например, для поддержки еще выше XGA 12.1 “TFT SVGA курс , чем на экране может поддерживать только , чтобы быть более ценным.

4 , Оперативная память:

Цены SDRAM памяти были стряхивая , текущие цены для потребителей , оно должно быть хорошим . Новый ноутбук начал собирать DDR памяти для достижения большей эффективности .

5 , МОДЕМ :

ноутбук модем стал почти неотъемлемой частью внешнего модема в настоящее время используются для старых машин . На этот раз , чтобы тщательно измерить значение каждого “кошка” между только сделать суждение от чипа модема . Есть много ноутбуков , использующих ESS звук Moden интегрированный чип для обеспечения использования и той же функции , снижает стоимость OEM . Если COMPAQ SONY некоторые дома серии .

6 графические чипы :

В настоящее время настольных чипов уровня технологии дисплей компьютера , как правило, процесс 0,25 мкм , в то время как для ноутбуков графических чипов также использует более продвинутую процесс 0,18 мкм . Поскольку основная цель ноутбука мобильный офис , при условии, что производительность дисплей чипа может удовлетворить потребности офисного программного обеспечения достаточно . Во-вторых, из-за дисплея TFT , разрешение фиксировано, который , как правило, максимальное 1024 × 768 . Экран Частота обновления ЖК-монитор , нужно всего лишь 60 Гц достаточно . Таким образом, система отображения ноутбук . Просто , чтобы достичь 1024 × 768 при частоте обновления 60 Гц , 24-битный цвет достаточно ! Однако в настоящее время ноутбук интегрирована AGP поддержку шины , и значительное снижение общей стоимости машины , на дисплее также отражает постепенный производителей ноутбуков позиционирующие психологию . Многие производители для запуска моделей недорогих , используя интегрированные графические возможности SIS или Intel8xx основной чип , она требует общей памяти на материнской плате, отображать естественный генерала. Теперь лучший графический чип используется выделенный чип TNT Grforce4 мобильного с в DDR памяти , например, серии Toshiba 5105 .

7 , флоппи и CD-ROM:

Ноутбук с дискеты была основана на трехдюймовый дисковод, на основе текущего модном машины уже флоппи устройства хранения , такие как плагин предназначен идти в ногу со временем.

CD-ROM мультимедийный компьютер в качестве стандартной конфигурации , ноутбук также полностью разработана, текущее развитие CD-ROM продуктов с компакт-диска на современном DVD-ROM или CD записывающие возможности в сочетании с пользователем на ноутбуке может стать очень интересной мультимедиа наслаждение.

8 , батарея :

Если вы слышите популярный ноутбук, который также используют никель-металл -гидридные батареи , хотя это издеваться над ней . Для тех, кто не в области распределения электроэнергии , это также не просто погоня за машиной не литиевые батареи , но и обратить внимание на задней части заряда аккумулятора указанного . Как SONY FX серии использует 1700mA / H 14.8V в лучшем может поддерживаться только для общего применения , около 40 минут , которые ставят эту батарею широко используемый FX210 ( AMD Duron CPU) FX220 ( 15 “экран ) Эти потрeблeния в машине тип батарей имеют более высокие ожидания заказчика должны быть осторожны суждение .

Блок 9 , трансформатор питания

Подавляющее большинство адаптивной переменной трансформатора может 100В до 240В AC годов. Необходимо напомнить, : Найти пользователи адаптер не думаю, что дело от напряжения питания соответствует значению , вы можете использовать рыночную власть несколько десятков миллионов низкого качества .

10 , звук и звук :

Нынешние новые ноутбуки аудио чипы 16-бит выборки , волновой синтез , 3D-звук, и другие функции , с шинной технологии PCI высокоскоростного для обеспечения быстрого качество звука . Некоторые звуковой чип для лучшего использования с DVD- приводом , также поставляется с цифровым интерфейсом позволяет ноутбук может выводить AC3

Judge the merits of performance laptops

Compare laptops can not simply talk about the merits of the configuration size. In this paper, notebook sales are listed according to the hardware, software and service of international standard list , described as a laptop computer performance evaluation methods . Willing to laptop users in the evaluation , when there is sufficient technical persuasive.

1, CPU:

Compared to a desktop CPU, Mobile CPU with a higher manufacturing processes, please . ” Notebook dedicated cpu energy-saving technologies ,” a text , in addition to laptops dedicated CPU using a special TCP packaging technology , because both are required to obtain a mobile CPU performance and low power consumption requirements.

Although some vendors claim to be used in a notebook over a desktop CPU technology has matured , but no doubt is different from the technical content of the same frequency cpu, desktop and mobile , component cost a lot worse. Mobile CPU machines will be included with the relevant technical sign , while some laptops desktop CPU ‘s nothing to declare , at the time of purchase so we must understand how the heart of the performance of the laptop.

2 , the hard disk :

Relative to desktop hard drives, notebook hard drive needs to have good shock resistance, which will directly affect the safety of the data. In this area the notebook hard drive , leaving only the IBM a single show . Currently popular laptops are higher than 10G. The maximum available to 48G. About its technical parameters, many brands of computers installed one rarely described , such as the number of revolutions (RPM), ATA interface specifications . The current P4 mainstream computer has been used to support high-performance 5400 ATA5 laptop hard drive .

3 , display:

The current laptops have adopted a true color (TFT) structure of the LCD, to note that we should not only recognize the size of the screen , while ignoring the resolution. Formal distinction : SVGA (800×600) XGA (1024×768) SXGA (1400×1050) UXGA (1600×1200). There are also some non-standard resolution : UWXGA (1024×480) WXGA (1152×768). For example, to support even higher XGA 12.1 “TFT SVGA course than the screen can only support to be more valuable.

4, RAM:

SDRAM memory prices have been shaking down , current prices for consumers, it should be good. The new laptop has started to assemble DDR memory to achieve greater efficiency.

5, MODEM:

laptop modem has almost become an essential part of the external MODEM are now used for the old machines . This time to thoroughly measure the value of each “cat” between only make a judgment from the MODEM chip . There are a lot of laptops using ESS sound MODEN integrated chip to ensure the use of the same function, reduces OEM cost. If COMPAQ SONY some home series .

6 graphics chips :

Currently desktop computer display technology level chips are generally 0.25 -micron process , while the notebook graphics chips also uses a more advanced 0.18 -micron process . Since the primary purpose of the laptop is mobile office , so long as the display performance of the chip can meet the needs of office software is enough. Secondly , due to the TFT display , the resolution is fixed, which is generally the maximum 1024 × 768. The screen refresh rate LCD monitor , only need to 60Hz is enough. Therefore , the laptop display system. Just to reach 1024 × 768 at 60Hz refresh rate , 24-bit true color is enough ! However, the current laptop integrated AGP bus support, and a significant decline in the overall cost of the machine , the display also reflects the gradual laptop manufacturers positioning psychology. Many manufacturers to launch low-cost models, using integrated graphics capabilities SIS or Intel8xx main chip , it requires shared memory on the motherboard , display a natural general. Now the best graphics chip uses a dedicated chip TNT Grforce4 mobile with in DDR memory, such as the Toshiba 5105 series.

7 , floppy and CD-ROM :

Laptop with a floppy has been based on three -inch floppy drive , based on the current trendy machine has already floppy storage devices such as plug-in designed to keep up with the times .

CD-ROM multimedia computer as a standard configuration , the laptop has also been fully developed , the current development of CD-ROM products from the CDROM to today’s DVD-ROM, or CD burning capabilities coupled with the user on the laptop can get extremely exciting multimedia enjoyment.

8, the battery :

If you hear the popular Which laptop also use nickel-metal hydride battery, although it scoff at it. For those who did not in the field of power distribution , it is also not simply the pursuit of the machine is not lithium batteries , but also pay attention to the back of the battery charge indicated . Like SONY FX series uses a 1700mA / H 14.8V at best can only be maintained for general applications, about 40 minutes , which put this battery widely used FX210 (AMD Duron CPU) FX220 (15 ” screen ) These consumption machine type of batteries have higher expectations of the customer must be careful judgment.

9 , transformer power supply unit

The vast majority of adaptive variable transformer can 100V to 240V AC ‘s . Need to be reminded : Find the adapter users do not think the case of the supply voltage matches the value , you can use the market power of some tens of million of poor quality .

 

10 , sound and sound :

The current new notebook audio chips are 16-bit sampling , wavetable synthesis , 3D audio and other functions , with the high-speed PCI bus technology to provide rapid quality sound. Some audio chip for better use with the DVD drive , also comes with a digital interface allows the laptop can output AC3

How do computer keyboard failure

Computer keyboard is one of the most commonly used computer input devices in the device , but also that you use most frequently used devices. Due to frequent use computer keyboard , computer keyboard case so often occurs in the failure of the course . Today and share with you after the failure of a computer keyboard solution .
Tools / materials
• U disk, keyboard cleaner with a soft brush , blow up balloons
The case of a desktop computer keyboard failure
Typically computer keyboard failure following two situations:
Percussion keyboard keys without display
After you open a word processing software, or other editors , whether you enter any character on the keyboard , the display did not have any display .
Keyboard input and screen display inconsistent characters
The letters on your keyboard to enter letters in the display and no correspondence or enter a numeric character is displayed .
Desktop computer case one of the processing methods and procedures
Check that the keyboard was electric
Press the button on the left side of the keyboard Caps Lock key to toggle the case , observe the indicator lights on the keyboard Caps are lit. If you can light up , indicating that your hardware keyboard may have been broken. If the keyboard does not light up to show that you are either bad or is connected with the host computer is bad , the keyboard has no power .
Check the keyboard connection interface with the host computer to determine whether good contact
The keyboard connected to the computer with a USB cable to the host computer ‘s USB host interface reseated , because behind the host desktop computer has multiple USB ports , you can also change a USB port to connect to see if good contact.
Tips: For some older models, if your keyboard is a PS2 connector cable
Please note that there is breakage or PS2 interface is inserted in the wrong location, such as the PS2 keyboard connector mouse connector found on the PS2 interface.
Reconnect after test
Reconnect often step 2 is basically to ensure that the contact with the host computer ‘s keyboard to normal. Now you can open a word processing software on your computer , the editor using the keyboard to enter a few characters to see if there is display . If normal , Congratulations you have successfully processed keyboard failures , otherwise proceed to the next step. Detection host interface is normal
If you do this step , then the probability of your keyboard is usually broken relatively large, but first do not arbitrary, we test the interface to the host computer to a conclusion. Find a usb device , such as U disk . We put it into the computer interface, see if you can use a normal , if normal use , it indicates that your keyboard is broken, you can replace a new keyboard , otherwise the normal description of the keyboard , your computer system or system has a problem , you need professionals to deal with , not repeat them here .
Desktop computer case two processing methods and procedures
This happens usually indicates the host computer keyboard is connected properly , but the keyboard has a problem , the following approach :
The case of letters and numeric keypad keys function key failure
If the result of the case or the numeric keypad keys failure leads to inconsistent input display , you can check -sensitive switch key left of the keyboard Caps Lock key , Shift key and right key NumLock key functions are normal switch. Sometimes due to the frequent use of these function keys , conductive rubber keyboard will not work under the keyboard bounce caused by failure occurs, you can check this cap if these keys keyboard is always jammed due to abnormal reasons resulting in the pressed state failure. In this case you can manually toggle the appropriate keys to reset it repaired.
A character repeated failures occur and the surrounding joint letter
For the above phenomenon , usually because a key bit is always stuck in the pressed state and neighboring keys associated with conductive rubber is in contact so that the keyboard intermittent failures . In this case , you can use your fingers for the occurrence of the failure of some of the keys to repeatedly reset button or pressing all the keys back again, has made the keyboard to normal.
Tips: Of course, because the glass down on the keyboard because the tea spilled on the keyboard will cause the keyboard part failure, this time with the host should disconnect the keyboard and the keyboard upside down to dry after the water is drained normal use, for water keyboard because scuppers ( slot ) is disordered upside down, just the keyboard to scupper ( slots ) can be tilted . Failure to display a character missing for such a situation , usually because the keyboard dust or debris from entering the internal keyboard snacks hinder conductive rubber metal contact with the circuit board under the contact of the keys can not enter the letters displayed . For this situation, you can use the keyboard cleaner with a soft brush , blow up balloons carried on the keyboard slot blowing dust blown debris to solve the problem , if the above method can not solve the problem, disconnect the keyboard and the host computer inverted keyboard, after beating aligned , reconnect it to work . Keyboard Keyboard garbled garbled phenomenon more annoying , this situation usually only one way you can try , and that is disconnected from the host computer keyboard , and then reconnect the keyboard to see if return to normal. If reconnect still fail, then you do not hold what hope. Such cases are usually garbled keyboard chip failures caused , we are not equipped to handle , you will get a new keyboard now . Laptop keyboard case malfunctioning laptop keyboard failure common approach is basically similar with the desktop , can be resolved by the above method . For some specific cases need to look at the following steps: a small part of the letter keys keyboard replacement laptop keyboard because the space is smaller than the average desktop keyboard, so it has some function keys are function keys with the  key to the achievement of certain specific functions , such as digital key alternative, M key cases, this is often not understood by everyone , and mistakenly thought it was a keyboard failure, in fact, the simplest way is to look at the bottom of the digital display light is lit. Once the indicator light indicates the numeric keypad zone is active, there is no doubt  M These keys are replaced with the numeric keys . You just need to hold down the left side of the keyboard area  key and function keys at the top right to switch back and forth . External keyboard for half past one would not handle the keyboard failure fault , you can find an external keyboard via USB connection is a pressing problem . Especially when large quantities of digital inputs , it is strongly recommended that an external keyboard input more convenient. Soft keyboard for keyboard failure of emergency law and does not solve the case of an emergency spare keyboard on hand , we can use the soft keyboard with the mouse to the emergency ,  input method here an example to introduce a mouse click on the taskbar to the right of the “Language Bar” button or by Ctrl + Shift keys to bring up the input method state . As shown in the pop-up state , use the mouse to click on the soft keyboard button, as shown in Figure red box right-click the mouse button , make sure the PC keyboard options , as shown otherwise, your soft keyboard with mouse point out that other characters, you will think garbled. Figure on the following pop-up soft keyboard , you can use the mouse to click on the appropriate button to enter characters , methods, and the use of a physical keyboard is the same, not repeat them here . Of course, if you want to close the soft keyboard only need to click on the soft keyboard input method button on the status bar again.

Common laptop battery repair method

Especially lithium laptop battery is idle for too long or just repaired , it must offset the charge -discharge curves and curves are generated by a genuine need full release cycle finished a few steps to correct repair their charge and discharge curves , we also called battery self- learning process. common laptop battery repair methods , mainly the following methods.

Method One

Set ( this is the most important step to be able to most laptop battery repair the relationship to the optimal state . Please do not need to pay attention to you )

a Open My Computer – Control Panel – Power Options – Power Schemes ,

The time parameter of the battery never wholly elected

b The two options alerts items untick aim when the battery drops a few percent of the time so that the program does not respond to the appropriate action to allow complete real laptop battery discharge , so that the battery itself to amend its lowest power consumption and curve 0% sync.

 

1.3

Discharge :

After the above settings finished , press the full release on the principle of complete charge and discharge the battery back and forth two or three times , the battery will fix the offset curve over.

Note: make sure when charging the battery is full , the best way is to shut down for several hours or overnight charging , discharging and then unplug the power until the computer automatically shut off . Such back and forth at least two cycles

Method Two

Batteryuse and charging of the instability caused by the battery capacity will decline, but this decline was not caused due to aging , so proper calibration is to make this part of the lost capacity to recover. Therefore regular battery calibration is very necessary thing, such as January-February time .

Such as Compaq and IBM laptop itself provides a battery calibration feature in the BIOS or power management program, so use these two brands friends can shine prompts. For those who do not provide this feature brand can follow my steps below :

The screen saver is set to “None”

In the Windows Power Management power scheme is set to “always open ” and the following menu all set off the device related to ” Never .”

Card will alert option in the ” low battery alarm ” is set to 10% , the operation is set to ” do nothing ” ; be “a serious power shortage alert, ” set to 3 %, operating as ” standby .”

Screen brightness set to maximum

Confirm Close all the windows , and save the data for all the work before

After confirming that more than 80% battery charge , unplug the power and all external devices , then if the screen automatically reduces brightness , then turn it hit the brightest . OK, you can go to sleep after the discharge end of the notebook will automatically shut down after the power plug for laptop charging , attention must be completely filled before turning on power , etc. , and then restore power to the calibration program before setting.

Correction good battery , you can rest assured that use .

Method three

Batteryrefresh program to restore the battery discharge time : big brand laptop has a battery refresh program , you can use it to repair the battery . There is a software called “BatteryMon”, a variety of versions , is a specific small laptop battery monitoring software , you can display the discharge curve , and will automatically run after installation.

Laptops, which with batteries, as usual discharge properly, causing the battery discharge time is getting shorter , leaving less than five minutes , if carrying a laptop to go to work , then it is very inconvenient , what can restore the battery discharge time?

Batteryfix for the above, we can use ibm battery repair battery refresh program launched to refresh the battery to discharge recovery time , as follows .

 

( 1 ) the use of AC power for laptops , download the provided laptop battery refresh program .

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( 2 ) Restart your computer, press the f8 key to enter the boot menu and select safe dos mode.

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Directory ( 3 ) into the file you just downloaded , perform a battery refresh program isbr0lww, exe, after reading the warning message , insert the floppy disk as required , and then press the Enter key to execute the self-extracting operation.

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( 4 ) Use this floppy boot the computer , the screen appears startingpc-dos … message.

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( 5 ) Follow the prompts to unplug the AC power , the program will automatically ni-mh battery discharge , the discharge is completed , the system will automatically shut down.

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( 6 ) Since then the battery temperature is higher, should not immediately start , let it cool for a while, plug in the AC power.

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( 7 ) with a floppy boot your computer, run the autoexec.bat file will automatically refresh program, and asks the user whether to proceed. After you select yes, press the Enter key.

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( 8 ) At this point, the program began to refresh the battery , the process soon , when returned to dos prompt a:> , it indicates the refresh is complete.

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( 9 ) Turn off the computer and charge the battery until the light turns green so far.

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( 10 ) The above procedure was repeated three times to get the best results.

Method four :

Freezer Law

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1 ) the battery wrapped in newspaper before being placed in plastic bags, wrapping into the freezer for three days ( the newspaper to absorb excess moisture )

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Out at room temperature after 2 ) decentralization of two days or three days

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3 ) two days after charging the battery fully charged , yellow phone wrap test ( estimated to save 80 % -90 % )

The method consists of the well-known battery manufacturers engineers said, according to friends that tested the effect quite effective .

As there is no effect , anyway, useless battery faster , but everyone has refrigerator , friends may wish to try it