![]() PCI-e 1.0 and PCI-e 3.0 provide the same power at the slot. ![]() Strange that Powerspec would suggest the card is not getting enough power. I hope you can provide more info about the motherboard. I have been looking to find info about the motherboard from the computer model you provided but I have been having difficultly finding anything that tells me the exact motherboard that you have in that computer. Is there any way to test this hypothesis without taking the whole system apart for a power test? So it seems there is a power-related problem, but I don't know if it is on the PCI-E or the PSU, or both. (the sliding bar will not move) Even when I reduce brightness on the monitor I have the same problem. Worth noting is that when I boot up Windows with the old card, the monitor goes to minimum resolution which I cannot change is display settings in Vista. Since the ATI R7770 GPU 2GB DDR3 doesn't work at all (black screen), and the reinstalled GeForce 8800GT is unable to use the installed up-to-date GPU driver, I am wondering if the problem is with the main PSU of the system. 3) Tech support for the motherboard said they doubted it was a matter of changing settings in the BIOS, and suggested it was a power issue. 2) There is no update to the BIOS available. ![]() Here is what I tried: 1) I installed a new ATI R7770 GPU 2GB DDR3 with a six-prong power slot (in case there was a power problem with the PCI-E) and the same type of memory as the old GeForce 8800GT that worked. I don't see any signage on the motherboard but it's what came standard on a Powerspec E371 which was an immensely popular model.
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