After reloading solution win7 system

Solution:

1, the first to use the shortcut key & ldquo; win + R”Open the “Run” window, and then type ““regedit” in the window. Click Enter to confirm;

2. Then expand in the Registry Editor: HKEY_LOCAL_MACHINESYSTEMCurrentControlSetControlClass{4D36E96B-E325-11CE -BFC1-08002BE10318};

3, after deleting the UpperFilters item, uninstall the device, restart;

4, then restart or find the device manager becomes: Code 10: The device can not Start, expand HKEY_LOCAL_MACHINESYSTEMCurrentControlSetControlClass{4D36E96B-E325-11CE-BFC1-08002BE10318};

5, finally add the string UpperFilters, the content is kbdclass, uninstall the device, restart;