I have a Dell optiplex gx620 small form factor computer with windows xp pro installed on it. I keep getting these stop error messages (BSOD) 0xFC and 0x7e with the 4 parameters from each stop message. The interesting part is when I discconnect the usb keyboard and mouse the system boots right into the windows login screen and when I try to connect the keyboard back to login, the screen goes blank then miliseconds after the BSOD pops up with one of those stop messages. The system has no ps2 mouse or keyboard ports just for information purposes. The reformatting the HD option is out of the question, for I need info locally stored on this system.