day before yesterday, i tried to "flash" upgrade the BIOS on my year-old Compaq. (MSI 6577 mobo, award BIOS). all's well til "press F1 to continue." Black screen. shoulda known better- anyway, purchased ECS915P-A mobo bundled w/ P4 640 HT. after install, windows (XP Pro) refused to boot. reset CMOS, checked BIOS and boot sequence, no load. used MS floppy boot disk series, re-installed OS. after recovering most programs, one required re-start. windows would'nt load. re-set CMOS, changed IDE cables, changed PSU. no boot. am typing this after a second floppy reset, using "repair" mode. have my programs, but will have to fight with MS again about multiple activations. DANG!!! is it the mobo? is it the bios? is there a difference? i need help fast, cuz i've only 3 days to activate OS, and if i have to install another mobo, i wanna do it before then. HELP!! THANKS! HELP!!!