WinXP system computer can't use the old keyboard what to do
1. Start the computer to determine whether the keyboard hardware is good, press the keyboard "Del" button, if the blue BIOS system to set up the interface, to prove that the keyboard easy to use, continue, if not appear to prove that the keyboard is not used, it is necessary to change the keyboard to continue;
2. If easy to use, boot point "F8" key, into the "Safe Mode" selection interface, choose one of the "last correct configuration", if the power-on round mouth after the use of the keyboard, generally to here on the OK;
3. If it is still not good to use, normal access to the XP system, double-click My computer, into the system Disk XP system folder, is generally in c:windows;
4. Find the Regedit.exe program, double-click the Run program, the Registry Editor window appears;
5. In the left column of the Registry Editor window, locate the hkey_local_machinesystemcurrentcontrolsetcontrolclass{4d36e96b-e325-11ce-bfc1-08002be10318 }, and then click Select. Several options appear on the right;
6. Double-click the "UpperFilters" on the right side, and the "Edit Multiple strings" window appears;
7. Change the contents of the "Value data" in the "Edit multiple strings" window to "Kbdclass" and click "OK". Go back to the Registry Editor window and close the Registry Editor
8. Restart the computer, you can solve the problem of old keyboard failure.