I have a friend who has a laptop and it was working fine until two days ago. It won't accept his login password to get into Windows. I believe this may be a user profile corruption. When he was attempting to login it gave him an error,
Windows user profile is incorrect. Somehow he got into his PC from Safe Mode. He then rolled back his PC. Now he cannot get into his PC at all again, telling him his password is incorrect.
I know he has checked his num-lock and caps lock. I do not believe it is a password error but a deeper error.
How can I help him fix his computer? What can I try to remedy this problem?