SLI Trouble Please Help

[Wayywayyh]

Hello, so about a month ago, I bought a second graphics card and a new motherboard. I now have 2 gtx 660s. One of them is the evga 660 sc sig2 and the other is just the standard with a single blower fan. The new motherboard is gigabyte's GA-990FXA-UD3 rev4. My old motherboard was the asus a97 r2.0. The problem is whenever I attempt to start a game, it might run, but it will usually flash red or black then go to a black screen. Then I am required to do a hard restart to get out of that black screen. I was reading a few things online and a few people where saying it was either a faulty graphics card or a faulty SLI bridge. Any opinions or helpful advice would be appreciated.



Full Specs:

FX 8350

GA-990FXA-UD3

16gb ballistix sport 1600mhz

Corsair HX 850

2 Evga GTX 660

1tb WD Black

1tb WD blue

Corsair h80i

a DVD/CD multi drive

LG Blue ray drive

a card 3.0 card reader

and a butt ton of blue 120mm fans

Windows 7 Home Premium 64bit

 

[Wayywayyh]

i still need to test the power supply, but is it possible that i put too much thermal paste when i put on my water cooler and it is causing it to short out?

 

[terry4536]

You certainly can reapply the thermal grease. I doubt that is causing your problems though.

 

[Wayywayyh]

I have finally figured out what the problem is. I tried a different gold rated power suppply with similar wattage, and still crashed. I tried it in another SLI capable system and it still crashed, I finnally decided to test my 2nd card alone again, and it crashes while the first card alone does perfectly fine.

 

[terry4536]

Good. I'm glad you have your culprit. You have had this problem a while.