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SLI - only 1 of my GTX 580 not detected.

Last response: in Graphics & Displays
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September 17, 2014 9:47:06 AM

Hi there, i will start saying that i recently repaired my PC because the motherboard was not working anymore.
So yesterday i put my WC loop and started leak testing, everything was fine.
Today i powered my PC and it was running smoothly, i have 2 EVGA GTX 580 hydro copper 2 in sli, and an asus rampage IV extreme (same as my old mobo).
I installed new drivers and restarted the PC, and it was fine.
So after a bit i started the PC and put in my password the screen went black so i restarted my PC, and i noticed that the first PCI mobo led was not lightening up anymore.
I checked in the BIOS and only my second card works, and is detected in the BIOS.
So, i dont know if the card got bad, i would have to drain my loop to test the working card in the first slot and is a little bit of a pain..
Can i have your thoughts? What could be the problem? i will try to swap the cards around as last attempt, but i wanna try different methods first!
I swapped the cables and ism still the same, i updated the drivers to the last version and only the second card works.
Any help please?

More about : sli gtx 580 detected

September 17, 2014 9:51:54 AM

your may wanna recheck power cables,but i guess you end up switching cards slots manualy anyway.
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September 17, 2014 9:55:07 AM

kapitalistas said:
your may wanna recheck power cables,but i guess you end up switching cards slots manualy anyway.


Yea i already switched the cables from the working GPU.
Thanks for the reply and yes, in the end i will probably do that even tho i think my GPU is dead since the mobo is brand new.
Still open to other suggestions before switching the cards!
Thanks again :) 
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September 17, 2014 10:04:13 AM

you can try check motherboard manual for troubleshootings its very helpful0 too.
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September 17, 2014 4:30:09 PM

kapitalistas said:
you can try check motherboard manual for troubleshootings its very helpful0 too.


I did and found nothing useful.
Any suggestions?
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September 17, 2014 4:34:48 PM

check your SLI bridge to see if it's seated properly.
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September 18, 2014 2:45:11 AM

Shadowblade2652 said:
check your SLI bridge to see if it's seated properly.


It is but that would not really make a difference would it? Since only the second motherboard pci led lights up ( so my card in slot 1 is not recognized) i tried to reseat it but nothing.. Im starting to think it is dead :( 
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September 18, 2014 8:24:26 AM

you wanna swap gpu"s anyway.
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!