Help. 3-way sli won't boot

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bricktamland

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Dec 7, 2014
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4,510
i am having problems trying to setup 3x sli. When I boot the computer gets past the post but restarts as soon the OS starts to load. I am using three evga gtx 970 one of which has a higher factory clock (according to nvidia this should not be a problem). I can boot with any two cards in any of the top three PCIe slots (My case prevents me from installing a card in the forth slot) with or without a sli bridge. I have a fresh install of windows 7 x64-bit. Does anybody know what might be causing this?

Update: I have updated my chip-set drivers and BIOS to the latest versions.

Hardware
CPU: intel core i7 Extreme 990X
Mobo: Evga X58 Classified 3
PSU: Corsair AX1500i
GPUs: 2x evga gtx 970 sc
evga gtx 970 ftw

OS
Windows 7
 
Solution
James Mason


the hard (not bendy) 3 way one right?

either way.... I'd say the motherboard is faulty.... I doubt it's your PSU, it seems like a power draw issue, as the GPUs don't really do anything until windows gets started., and when the motherboard tries to supply the extra 75 watts to the PCIE slot it poops out.
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bricktamland

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Dec 7, 2014
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4,510


I just tried this ,but it didn't work. Thanks for helping out though.
 
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bricktamland

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Dec 7, 2014
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4,510


I was just about to do that. Also I'm using the double wide sli bridge that came with the motherboard.
 
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James Mason

James Mason

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Jan 2, 2014
13,553
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74,965


the hard (not bendy) 3 way one right?

either way.... I'd say the motherboard is faulty.... I doubt it's your PSU, it seems like a power draw issue, as the GPUs don't really do anything until windows gets started., and when the motherboard tries to supply the extra 75 watts to the PCIE slot it poops out.
 
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Solution
B

bricktamland

Reputable
Dec 7, 2014
7
0
4,510
I tried booting with one card in the fourth slot and had the same problem. I think you might be right that it's a hardware issue with the motherboard. I can't think of anything else that I can do. Anyway thanks for helping me out.
 
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