aaron6581230 Posted September 1, 2012 Posted September 1, 2012 So I managed to pick up a couple GTX 275s for some SLI action. I'm running a P67A-UD4-B3. When I install one of my cards, everything works fine - drivers install, everything works like a breeze. When I install the 2nd card, it is not detected. Troubleshooting, I tried putting the 2nd card into the 1st slot to see if it runs on its own. Strangely, there's no video, though Windows actually boots (I can hear the booting sound). I think to myself, "ok maybe it's DOA" and prepare to return the card. Today, I try it on my other rig (running an ASUS P6T Deluxe), and the card works! Drivers install correctly and everything too. I know it's not a PSU problem, as I have Corsair 750W/850W power supplies in both computers. And I tested the voltages on the P67 one as well. So dare I say, the card is incompatible with my board? Share this post Link to post Share on other sites More sharing options...
ir_cow Posted September 1, 2012 Posted September 1, 2012 (edited) well you know slot one works and you don't get video and it's also the same type of card GTX 275 than I gonna go with a bad card. edit: Maybe you forgot to plug the power into it? or maybe it wasn't seated all the way? The only time a card has come back from the dead for me was one of those two. Edited September 1, 2012 by hornybluecow Share this post Link to post Share on other sites More sharing options...
SpikeSoprano Posted September 1, 2012 Posted September 1, 2012 That card should be fine to run in sli, mabey you have a problem with your second pcie slot, or the second card is wonky and only works when it feels lke it, a short of some kind. Share this post Link to post Share on other sites More sharing options...
aaron6581230 Posted September 1, 2012 Posted September 1, 2012 I've tried reseating the card multiple times. Thing is, it doesn't work in the first slot either....but strangely works in all slots on my other machine Share this post Link to post Share on other sites More sharing options...
Andrewr05 Posted September 1, 2012 Posted September 1, 2012 So neither card works in the second slot or only one of the cards doesn't work in the second slot? Maybe theres an issue with that PCI lane? Maybe you should be RMAing the mobo and not the card if you know it works... Share this post Link to post Share on other sites More sharing options...
aaron6581230 Posted September 2, 2012 Posted September 2, 2012 So neither card works in the second slot or only one of the cards doesn't work in the second slot? Maybe theres an issue with that PCI lane? Maybe you should be RMAing the mobo and not the card if you know it works... The working card works in both slots, so I know it's not the motherboard Share this post Link to post Share on other sites More sharing options...
IlijaPlayerP Posted September 2, 2012 Posted September 2, 2012 This is wierd...an interesting problem you got there. I'd go with "not fully seated" or with "forgot to plug PCI-E power" or...I don't know, could be anything. This is a very unique situation, we can guess all day long, but I don't think we'll nail it. Share this post Link to post Share on other sites More sharing options...
aaron6581230 Posted September 2, 2012 Posted September 2, 2012 An added detail - the card that supposedly 'doesn't work' spins at max fan speed during times when it actually doesn't work. So I know it's not a monitor or video cable problem either. Fan spins normally when it runs on my other rig though -_- Share this post Link to post Share on other sites More sharing options...
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