Q: keyboard is not working and mousekey is disabled

Boot in Safe mode, and see if that works.   Then try a different login — if there's one available — and see if that works.   Chances are, there's an add-on, extension, anti-virus or anti-malware tool, a cleaner or optimizer or space-saving tool, or some run-of-the-mill ad-ware installed here.  Finding and removing the add-on will probably only be possible from Safe Mode, assuming that works.

How do you boot i safe mode.

Here is how you boot into Safe Mode

If the above doesn't work, try running this program and then copy and paste the output in a reply. The program was created by Etresoft, a frequent contributor.  Please use copy and paste as screen shots can be hard to read.

Etrecheck – System Information

Change that to If the above does work.