I just bought a supply power supply (450w) and a new video card (Radeon hd6580) and the install went fine, but when I powered on the computer the display said entering power save mode, went black and powered down. I tried to go into the BIOS to see if there was a way to configure it to allow my to select the PCI slot (or something to that effect), but there is nothing in the BIOS to do that. Any ideas of what the issue might be?
p.s. I called Radeon and they said the BIOS needed to be updated, which I did but still no option