Win7 keyboard failure Login login keyboard failure can not enter the password solution

win7 What should I do if the login screen fails and I can't enter my password?

1. Click the button in the lower right corner to call up the easy access item

2. Check [Do not use keyboard input (screen keyboard)].

3, will bring up the screen keyboard, as shown in the figure

4, use the on-screen keyboard to enter the login password.

5, press win+R , enter: regedit to open the registry as an administrator, as shown in Figure

6, find the following item HKEY_LOCAL_MACHINE\\SYSTEM\\CurrentControlSet\\Control\\Class\\{4D36E96B-E325-11CE-BFC1-08002BE10318}- >Delete“UpperFilters”

7.Delete keyboard to Device Manager->Restart PC-->Automatically install keyboard-->Installation will prompt to restart--> ; Restart again

8, open the registry: HKEY_LOCAL_MACHINE\\SYSTEM\\CurrentControlSet\\Control\\Class\\{4D36E96B-E325-11CE-BFC1-08002BE10318}, add the new "UpperFilters" value to "kbdclass".