I just upgrade a 9800gt to a 280-GTX and the system will post but will no longer boot to OS. I have three separate bootable hdd's with three OS's; Vista x64, XP 32, and Ubuntu 8.10. BIOS only recognizes two of the three (not the XP 32).
* I thought it might be a power problem so I dropped the 9800gt back in and had the same issue
* Diagnostic (Ultimate boot cd) would not recognize any of the drives.
Even if I fried one the other two should work. Any ideas on what could be wrong?
I did have a clean partition on the 500g that I was able to install XP on and get the system started up again. It looks like the 750g is a goner and I will see what I can do about repairing the 150g with Vista. That seems to be intact it just won't boot.