status description:
One day win10 afternoon update after the restart, suddenly unable to enter the PIN code to unlock later found the entire keyboard failure.
Gunong a few hours to find a solution, recorded:
1. Unlock
Open the bottom right corner of the screen keyboard, enter the password (lock screen with a mobile phone camera, forgive me)
2, see the cause of the problem
In the lower left corner of the Windows key on the right mouse button and select Device Manager, find HID Keyboard Device and keyboard are PS under a yellow exclamation point / 2 standard keyboard (not deliberately broke has been repaired screenshot), double-click tips
equipment status:
According to the online prompts to uninstall the device, and then Scan for hardware changes, it is invalid.
3, to solve the problem
Open the Registry
In the lower left corner of the Windows key on the right mouse button, select run:
If you have logged QQ micro letter or on the computer, log in directly, then give yourself regedit by phone, copy and then run through a mouse;
Otherwise it point by file folder, right, path: C: \ Windows \ regedit.exe
Then open the registry path: HKEY_LOCAL_MACHINE \ SYSTEM \ CurrentControlSet \ Control \ Class \ {4d36e96b-e325-11ce-bfc1-08002be10318}
Delete the UpperFilters -> Restart -> new string value UppderFilters, numerical data kbdclass
4 Notes
I solve the problem this way, if you can solve, but to find other ways of their own, can open the bios check the keyboard is in effect, if not take effect may be bad hardware.
About keyboard failure, how to type questions, I opened the micro letter, sent to their own mobile phone, and then copy up with the mouse. If the computer did not landed QQ, micro letter ... to think of other ways, and I do not know how to do, not with a peripheral keyboard seems to be in force