Heck, many computer novices friends would ask me how the failure of the keyboard ? Not press the number keys on the keyboard , or the failure of part of the keyboard keys . Around these more common computer keyboard failure , computer white matter , editor skies rain system for everyone to be introduced , so that we can identify the cause of the failure of the keyboard as well as solutions .
Keyboard failure have more variety , here are some common keyboard failure phenomenon and solutions.
A : the numeric keypad on the keyboard failure
This is the lowest level error will often make a lot of new friends , usually large desktop keyboard , causing the keyboard numeric keypad ( 0123456789 ) failure of most of the key reasons is that we closed the numeric keypad , you can see Numlock key is turned on , the corresponding there is a light above the numeric keypad , press the Numlock lights above the key that opens the numeric keypad.
Some notebook novice friends often ask why I’m right part of the letter keys laptop keyboard is indeed break out numbers instead of letters, very tangled ! In fact, this is because the numeric keys and alphabet keys laptop binding exists , when opening the numeric keypad, letter keys are arranged on the right part of the number keys , mainly because of less laptop keyboard , the intelligent switching factory settings . Solution is as follows :
If only the keypad is locked , then press and hold the fn + Numlk key to switch to , and vice versa. There are some new friends often do not know the wrong letters playing out all uppercase letters , this is because the key function opens the uppercase letters , canceled only need to press the “Caps Lock” key to switch to normal.
Two : part of the keyboard keys on the keyboard failure, this is no regular key failure
Key failure caused by keyboard part , this situation is most computer keyboards internal circuit board failure , this phenomenon is usually because the circuit board or conductive plastic on the dirt , which makes it impossible to properly switched between the two. Other factors are also possible, such as: keyboard plug is damaged , line problems, damage to the motherboard , CPU is not working properly , etc., but not the main reason. The former you can try the following methods to resolve them, and the latter is generally related to computer failure or malfunction keyboard is not the scope of this .
1 . Disassemble the keyboard. Note that when you open the keyboard , be sure to button surface ( that is, we operate side ) down , board up , otherwise conductive plastic may have come off on each key , giving you repair trouble.
2 . Open circuit boards, circuit boards are generally made ​​of soft plastic film , buttons engraved with cable , with a concentration of more than 97 % alcohol cotton ( 75% of medical alcohol cotton can, because I had used , but the most good cotton with a high concentration of alcohol ) and gently scrub two times on the circuit board . For key failure to take care of part of the line a few times .
3 . View key failure conductive plastic parts , if the above accumulated a lot of dirt , then use the same alcohol scrub. Assuming conductive plastic is damaged , then I suggest that you can not commonly used conductive plastic buttons on the change to the damaged part , although this “shattering ” initiative not allow the keyboard to play out all the features , but the most At least you can extend the life of common keys.
4 . Clear the keyboard in the corner of the dirt , tools available brush, small brush , etc., but pay attention to some of the action should be gentle .
5. Check whether the module is soldered or welded sealing off , if you make the electric iron , it can repair welding work . Of course, this procedure applies only to make the electric iron on a friend , the friend will not be used , skip this step.
6. Installed keyboard. One thing to note here that we have to wait and then be clean and the alcohol evaporates . The best computer configuration network

If the above methods can not be resolved , we can then try to use what method of investigation :
Modify keyboard driver : Open through the ” My Computer” System Properties , select the Hardware tab : Open the Device Manager, we found that under Chinese Windows XP operating system , the default keyboard driver is the “standard 101 / 102 key or Microsoft Natural PS / 2 keyboard . ”
1 Right-click and select Update Driver Hardware Update Wizard appears : Select ” Install from a list of specific location (Advanced ) ” and click “Next “, select ” Do not search I will choose the driver to install. ”
Click “Next” to enter the ” Select install this hardware device drivers ” on page remove the check box ” Show compatible hardware ” before the tick . In the ” Standard Keyboard Model ” column select click “Next ” pop-up ” Update Driver Warning ” point ” is .” “Confirm Installation ” window continues to point ” is .”
2 . Complete the Hardware Update Wizard. Restart the computer.
Modify the registry : Click the “Start” menu , click ” Run”, type “regedit”, open the registry, enter “HKEY_LOCAL_MACHINE \ SYSTEM \ ControlSet001 \ Control \ Keyboard Layouts”, there are many children , I have found through observation , to ” 0804 ” at the end are Simplified Chinese input method. Open the “E00E0804″, can be seen on the right of children there “Layout File” subkey, double-click to open the item , the ” Value data ” in the “kbdus.dll” to “kbdjpn.dll”, ” OK” available . And so on , can be all to ” 0804 ” at the end of the subkey “Layout File” all changed “kbdjpn.dll”, will be chosen specifically according to their common input method. Then restart the computer just fine !

If the above methods do not solve , then it may be a hardware failure, the most common hardware failure is the keyboard , the keyboard inside the wrench is oxidized , resulting in disconnection , etc. , we can try another keyboard , the vast majority can solve the problem, of course, there are very few emerging since the keyboard plug is damaged , circuit problems, damage to the motherboard , CPU is not working properly , these we need to take the place of professional service under specific detection .