Win 98SE Fatal Exception at Login

When trying to log in to my PC the following usually happens. The screen goes black, and hitting any key brings me to the following BSOD: (Windows)
A fatal esception 0E has occurred at 0028:0003F3F. Hitting a key again usually brings me to a blank screen where I can Ctrl-Alt-Del and shutdown. This continues even after replacing MB,CPU, and video card. The system is as follows:
FIC AZ11EA w/Athlon 1.2,512MB PC133 RAM, 3dProphet II MX 64, Network Everywhere 10/100NIC, SBLive Gamer 5.1. I’ve tried removing my AV software, (Norton Systemworks 2001), still happened.