yeah i have had that problem, it has to do with the nforce drivers. they suck . lol. a couple of minutes ago i was troubleshooting this problem. BIOS wouldn't show up but a couple of seconds later i could hear windows loading up. Luckily i have a DVI and Analog connectors on my monitor, so i switched it from DVI to the analog and it came back. A note though, when i first tried putting back the analog cable it still would not show up the BIOS. Well after a couple of tries it finally showed the BIOS.