Has your keyboard ever malfunctioned? Keyboard failure how to solve it? There are more kinds of keyboard failure, then, today I introduce you to some common keyboard failure phenomenon and solutions.
Computer keyboard failure how to do? Three steps to teach you to solve the problem
The keyboard on the numeric keypad malfunction
This is a lot of novice friends will often make the most low-level mistakes, generally, large desktop keyboard, resulting in the keyboard numeric keypad (0123456789) key malfunction most of the reasons are that you close the numeric keypad, you can see whether the Numlock key is open, corresponding to the above a numeric keypad light, press the Numlock key above the light is on that opens the numeric keypad.
The solution is as follows.
If only the keypad is locked, then please press and hold the fn+Numlk key at the same time to switch, and vice versa. There is a newbie friend who will often be overwhelmed, the letters out of all capital letters, this is because the capital letter key function is turned on, cancel only need to press the "Caps Lock" key to switch to normal.
Part of the keyboard keys do not work, there is no regular key failure
Cause part of the keyboard key malfunction, most of this situation is the computer keyboard internal circuit board failure, this phenomenon is generally due to dirt on the circuit board or conductive plastic, which makes the two can not be connected properly. Other factors may also be possible, such as keyboard plug damage, line problems, damage to the motherboard, and the CPU does not work properly, but this is not the main reason. The former you can try the following methods to solve, the latter is generally and computer failure or keyboard failure is not in the scope of this article.
1. Disassemble the keyboard. Note that when opening the keyboard, be sure to button the side (that is, we operate the side) down, the circuit board up, or each key on the conductive plastic will have fallen off, bringing you trouble to repair.
2. Turn over the circuit board, the circuit board is generally made of soft plastic film, engraved with the key line, with a concentration of more than 97% alcohol cotton (75% of the medical alcohol cotton can also be, preferably with a high concentration of alcohol cotton) gently scrubbed two times on the circuit board. For the key failure part of the line, take care of it a few more times.
3. Check the conductive plastic of the malfunctioning part of the keypad, and if a lot of dirt has accumulated on it, use alcohol to scrub it as well. Assuming that the conductive plastic is damaged, then I recommend that you can not commonly use keys on the conductive plastic to the damaged part, although this "tear down the east wall to fill the west wall" initiative can not let the keyboard play all the functions, at least you can extend the life of commonly used keys.
4. Remove the dirt in the corners of the keyboard, tools available brushes, small brushes, etc., but pay attention to the action to gently some.
5. Check the soldering module for false solder or desoldering, if you can use a soldering iron, you can make up the soldering work. Of course, this step only applies to friends who can use a soldering iron, but will not use friends, please skip this step.
6. Install the keyboard. Here a point must be noted, that is, we must wait for the alcohol evaporates clean before proceeding.
The above methods can not be solved, you can try to use the following methods to troubleshoot
Modify the keyboard driver: open the system properties through "My Computer", select the Hardware tab: open the Device Manager, we found that in the Chinese Windows XP operating system, the default keyboard driver is "standard 101/102 keys or Microsoft Natural PS/2 Keyboard".
1. Right-click and select Update Driver, and the Hardware Update Wizard will appear:
select "Install from List or specified location (Advanced)", click Next, and select "Don't search. I want to select the driver I want to install myself.”
Click Next and go to the "Select the device driver to install for this hardware" page to remove the small check in front of the checkbox "Show compatible hardware". Select "Japanese PS/2 Keyboard (106/109 Key)" in the "Standard Keyboard Model" field, click "Next", a pop-up will appear "Update Driver Warning", click "Yes". Continue to click "Yes" on the "Confirm Device Installation" window. 2.
2. Finish the hardware update wizard and restart your computer.
Modify the registry: Click the "Start" menu, click "Run", type "Regedit", open the registry, and go to "HKEY _LOCAL_MACHINE SYSTEMControlSet001ControlKeyboard Layouts", there are a lot of sub-items, I found through observation, ending with "0804" are Simplified Chinese input method. Open "E00E0804", you can see that there is a "Layout File" sub-section in the right sub-section, double-click it to open the sub-section, and put the "Value Data" in the double-click it to open it, change "kbdus.dll" to "kbdjpn.dll" in "Value Data", and then "OK". And so on, you can change "Layout File" to "kbdjpn.dll" for all the subsections ending with "0804", depending on the input method you commonly use, you can choose it. Then restart your computer and you'll be fine!
If the above methods can not be solved, then it is likely that the hardware failure, the most common is the keyboard hardware failure, the keyboard internal trigger is oxidation, resulting in the broken circuit, etc., you can try to change a keyboard, the vast majority can solve the problem, of course, there are very few appear due to damage to the keyboard plug, the line has issues, the motherboard is damaged, the CPU does not work properly, etc., these we need to take to the maintenance Place specific testing.