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Making my first build from scratch. I've managed to boot to bios just fine with everything except GPU plugged in, but when I plug in my GFX card, suddenly, black screen. I've tried both onboard and GPU dvi ports when the GPU is plugged in, but still no signal. As soon as I take out the GPU and switch to onboard graphics I can get into BIOS.





EDIT: After putting in a different GPU which I know works correctly from my old rig, I discovered that the problem remains. Unless I am mistaken, this means that the problem must be related to the motherboard (or BIOS maybe?). Does it seem possible/likely that the mobo might be DOA so that when a PCI-E device is used, the pc black screens?

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Did you remember to plug the auxiliary power into the card? Are you sure the card even works? – Shinrai Feb 5 '13 at 18:21
Yea, it definitely has power. I am not sure the card works. The fans spin, but that is the only indication that it is working at all. How can I diagnose a DOA GPU? – guywhoneedsahand Feb 5 '13 at 19:00
I'd try it in another system if you have one handy, but if everything else works I'd probably just assume it's DOA and get a replacement. It could potentially be something else but the odds are not high enough to spend time testing, IMO. – Shinrai Feb 5 '13 at 19:06
A 7970 GHz has a TDP of only 250W, so not "required by the GPU by itself". And yes, 550W is the suggested PSU, and 650>550. In any case, yeah, I'd RMA the GPU as Shinrai said. My only other guess is it could be an issue with the Lucid Virtu MVP on the mobo. – Marcus Chan Feb 5 '13 at 19:36
I agree with Marcus, this should be enough juice to at least get the damned thing to power on. GPU virtualization settings are a good thing to check too, though - I'm not familiar with this board but should be an easy BIOS option to find. (You'd think it'd boot to the onboard anyway, though - this sounds more like it's trying and failing to use the discrete) – Shinrai Feb 5 '13 at 22:08

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