Here's a weird one.
I have an Asus Mn2-e Sli Mobo, with an asus 8800 gts 640mb video card. I added a 2nd video card(GT6800) and it wouldn't boot at all.
I tried a different one (Geforce FX5500) to run my third monitor and it booted fine. I installed vista to another drive, and when I boot I don't even get past the ram check, it just hangs there.
Removing the 5500 and it's fine again.
Any ideas on what I could do, I'm really missing my 3rd screen, I'm cheap so I've got 3 small screens
My system specs are
amd 4400+ X2 64bit processor, asus m2n-e Sli motherboard, asus 8800 GTS video card and a Geforce FX5500 to run my third monitor
booting ubuntu xp and vista on different drives.