I am at my wits end with this one. PS/2 Keyboard and mouse (known working, default) will not function after windows xp (sp2) startup. The keyboard works fine in BIOS setup. Neither will function in windows, even in safe mode. Windows boots just fine, no errors, nothing in event log; the mouse and keyboard just dont work.
I may have foolishly turned off the Logitec drivers on startup in an attempt to clean up what was starting up. Silly me. Right now I just want out of the trap, forget the cheese!