Graphics Driver Crashing/Freezing

[psynen]

I posted the following on the 12th of October,

"Hello, for the past two days my PC has been randomly restarting or freezing at inexplicable points in time. For example, it will freeze during sessions of gaming, watching videos on the internet or just go haywire during boot-up and restart itself. The freezes leave my PC with a solid black screen and a screen light blue, I don't BSoD, other times my screens go a static/pixelated like green/pink colour.

My PC was fine before 2 days ago, I had a friend around and I was helping him determine what was wrong with his PC as he had just ordered new parts and believed an item was DOA, in helping him I tried his case and RAM within my PC. Ever since then I have been stricken with this infuriating issue.

My specs are as follows:

- AMD FX-8350
- G.Skill Ripjaw 4*4GB 1333MHz RAM
- 2*EVGA Nvidia GTX 660's (Recent driver installation, from the website not Nvidia experience)
- SanDisk 64GB Solid State
- WD Caviar Blue 500GB
- AsRock 990FX Extreme3 Motherboard
- Corsair GS800 800W PSU
- Windows 7 Ultimate

All is stock, I don't even attempt to OC as I have little knowledge on OC'ing, the system is around 1 1/2 - 2 years old, I've already tested RAM by taking individual sticks out, I currently have 12GB of RAM in at the moment and the freezes are less frequent, I have also removed another 500GB HDD as I assumed it was bad sectors due to it being an old HDD I removed from a Sky HD box, but to no avail the problem still persists. I'm stumped. My temps are incredibly cool, even while max load. (Have stress tested with Prime95) and have attempted to use Memtest86+ I just don't know what to do... Please help me."

I believed my problem was fixed as I was able to use my PC for a while but today I have been hit with the problem again and it seems to be happening more frequently now. I have re-flashed my BIOS to the latest revision, used memtest86+ for 8 hours over night and no errors surfaced and I have taken apart and put together my system so many times that I imagine I could do it blindfolded now. I just don't know why my PC is in it's current predicament, any and all help is welcome at this point as I really need this sorting and I can't for the life of me figure out what the problem is with my PC.

Here are example images of the freeze:

 

[junkeymonkey]

i'd start by testing each card one at a time in each slot not in sli and see how each one will do on its own

 

[psynen]

i'd start by testing each card one at a time in each slot not in sli and see how each one will do on its own

Sorry for the late reply, I have followed what you have recommended and the PC works fine if I use the cards individually but when I use them together be it with or without SLI the PC then crashes when under load. It's not a heat issue as I have stress tested the GPUS with Furmark, they just turn off when both cards are in my PC. Windows Experience Index and other things such as playing games on Steam crashes my PC. Could this be a faulty PCI slot or a PSU problem? And how would I effectively determine which of the two is the issue? As I need to sort this.

Thank you

 

[junkeymonkey]

hard to say on that with out doing them in sli on another computer that supports sli to test that -- you never know

it could be the board these things happen and looking over at newegg it did not do too good in its reviews --

http://www.newegg.com/Product/Product.aspx?Item=N82E16813157281

one thing I thought was funy is on the eggs spec page of this board it states ---

PCI Express 2.0 x16 3 (x16 , x16, x4) but supports NVIDIA Quad SLI ????

your psu looked to check out ok and should do the job but like said above unless you can test with another unit to be sure on that you just don't know