I have a Soyo 5EMA+ mobo, and I've been running the system overclocked at 2.5x with 112 MHz FSB (280 MHz) for a year now with no problems. Decided to get an AMD K6-2 450 to try and increase system performance (4x @ 112 MHz FSB, 448 MHz). Installed new processor, set jumpers and rebooted system. BIOS recognized AMD chip with correct speed and got through the Win98 splash screen. However, a fraction of a second after displaying the desktop, I got a blue screen error saying something about a problem with SCSIPORT.???, and the system froze.

The AMD site says this is a problem with processors running 350 MHz or faster, but only in Win95 OSR 2. It says this problem should not exist in Win98. The MS knowledge database doesn't have anything on this issue either. A friend said something about needing to reinstall Win98 because when it's first installed, it detected the Intel MMX chip and included modules specifically for that chip. When the K6 is installed, the OS isn't smart enough to reinstall the modules needed for the 3DNow!.

Any comments or suggestions would be appreciated.