[Windows 7] BSOD: 0x1000007E (atikmdag.sys)

Since a few days now I have a problem where my monitor spontaneously turns black and won’t return the image. Afterwards the entire computer just freezes up and I have to forcefully reset it. When I’m finally back in Windows afterwards, I get greeted with an error message stating that Windows was recovered from a system crash with the code 0x1000007E.
With a tool called Bluescreenview I checked to see what the .dmp file contained, it was the following:
110913-24897-01.dmp   9-11-2013 0:30:05   SYSTEM_THREAD_EXCEPTION_NOT_HANDLED   0x1000007e   ffffffff`c0000094   fffff880`0f333f3d   fffff880`055b9c68   fffff880`055b94c0   atikmdag.sys   atikmdag.sys+9164f6               x64      C:\Windows\Minidump\110913-24897-01.dmp   8   15   7601   276.248   


atikmdag.sys   atikmdag.sys+9164f6   fffff880`0f2ba000   fffff880`0ff03000   0x00c49000   0x52540dc7   8-10-2013 14:51:03
You’d think it was a driver issue looking at that, but I never had any issues before, and never even changed any drivers for the last 7 months. (It only started occuring a few weeks ago). Regardless of that, I still decided it was a safe bet to do a clean reinstall of the latest drivers, so I ran Driver Sweeper to fully remove all the old drivers and then did a clean install with the latest drivers (CAT 13.9), but the problem is unfortunately unsolved.
Info about the computer:
CPU: Intel Core i7 920 D0
MOBO: ASUS P6T Deluxe V2
Graphic Card: Sapphire ATI Radeon HD 5850 (Catalyst 13.9)
Memory: OCZ 6GB (3×2) DDR3-1333
Now I don’t know if this is related – But running memtest86+ results in no errors, but I do however get the same symptoms from time to time running the test there. Could this indicate the RAM is still bad? How would that affect the graphic card in this way though? Are there any other things I should be testing still?
Hope you guys can help me out, cause I’m stumped here now.
Answer #1
See if WhoCrashed throws up anything pertinent:
http://www.resplendence.com/whocrashed
Answer #2
Basically the same thing – States it’s a driver issue, but I already completely wiped the drivers and did a clean install of fresh updated drivers. :/
Answer #3
Replaced the card with an ATI HD 7850, so far I have yet to receive a BSOD. Seems the card itself really was the culprit.
Answer #4
was it overheating?
Answer #5
was it overheating?
Nope. Checked for that, it was running at about 47~50C according to GPU-Z.
Answer #6
still no BSOD? maybe it’s faulty.
Answer #7
Yeah haven’t had a single BSOD yet so far.
Been playing 1080p HD movies, had youtube running on the background, ran a game as well.. nothing, no BSOD.
Answer #8
yeah so it looks like your graphics card has either give up on you or it’s faulty.
Answer #9
Yeah looks like it was in the process of dying I guess. Glad I didn’t waste my money on the new card.