Trying to flash the bios in a Tyan Tiger MXP S2466n-m4. I am running the PHLASH16.exe which I downloaded from Tyan site along witht the new Bios. I get a error that pops up saying: PHEONIX BIOS ERROR Cannot Flash If Memory Managers (e.g. HIMEM) present. PRESS ANY KEY TO EXIT.

I am booting with a clean boot disk I made in Win XP, and I also tried a couple of boot disks I had from Win98 / 95 installs. I do not see any memory resident programs loading with these disks.\

What could this be?