I have a PS/2 keyboard that has always worked fine. Yesterday, I rebooted my computer and when I got to the login screen, I was unable to type in my password. When I try to edit things in the pre-login area (it's late... I forget the proper name) either changing my BIOS settings or the using the 'command prompt?' (looks like Dos) the keyboard responds just fine, but once it is actually trying to start Windows, it fails... even the numlock key won't change the light anymore. It sounds to me like something might have managed to alter the Windows driver for the keyboard... but how can I fix this without completely reloading Windows and possibly losing a good bit of data?