system problem please help

[punterion]

Hi,
everyone

 

here is my rig,

 

cpu: i7 4960x extreme edition
motherboard: rampage iv black edition
gpu: 2 x evga 780ti classified edition
ram: 32 gb (4 x 8gb) G-skill trident X
ssd: samsung 840 evo
hdd: WD black 4 tb
mid monitor: asus pb278q
side monitors: 2 x asus mx279h
cabinet: corsair 900 d
psu: corsair ax 1200 i
cpu cooler: corsair h110
gpu cooler: 2 x corsair h55
gpu backplates for cooling from evga
cooling kit 2 x nzxt kraken g10

 

I have a problem guys.. everything is set up (all connections double checked) and running but when i log into the OS, after few seconds my display goes off. There are 5 white leds on each of the graphics card, as i have a 2 way sli, but when the display goes off only 2 white leds are on, ont he first card as the second card seems to have all the 5 leds perfectly fine. So i did some research and found out what those LEDS seem to mean. If the card is facing you the LEDS read out like this:
GPU - This indicates if voltage to the video card's GPU is good
MEM - This indicates if voltage to the video card's memory is good
PLL - This indicates if the voltage for auxillary components such as fans, LEDs, etc. is good
3.3V - This indicates if the voltage supplied from the motherboard via PCIe slot is good
12V - This indicates if the voltage from the 12v input from the power supply is good

however i had my voltage supply and my power supply checked and all the connections were fine. it seemed to me that the 2 leds that were glowing were the 3.3v and the 12v.
pls help me

 

[failblox]

Try running each card separately to determine whether or not they both actually work.

To me it sounds like a driver/software problem of some sort, since you can boot up to your OS, and the problem only occurs once you log in. If you can, try installing Windows or another operating system on a separate storage device and see if there's any problems then.