Win7 System notebook keyboard malfunction What to do

Win7 System notebook keyboard malfunction what to do

Workaround:

1, first use the shortcut key "Win+r" to open the "Run" window, and then enter the window "regedit" click Return to determine;

2, then in the Registry Editor in turn expand: hkey_local_machinesystemcurrentcontrolsetcontrolclass{4d36e96b-e325-11ce-bfc1-08002be10318};

3, after the deletion of upperfilters items, uninstall equipment, restart;

4, then restart or find Device Manager into: Code 10: The device can not start, expand hkey_local_machinesystemcurrentcontrolsetcontrolclass{ 4D36E96B-E325-11CE-BFC1-08002BE10318};

5, the final add string upperfilters items, content is kbdclass, uninstall equipment, reboot;

6, if the above method can not solve the problem, please back up the data, and then reload the system.