7990 crashes...trying for about 1 week now

[adriaan]

Hi everybody, maybe this is the 100th post for this problem but i cant figure it out.. i am trying for about one week now.

My setup:

Raderon 7990
Asus rampage extreme
4Gb
1000Watt
Win 7 64x
Newest catalist driver (not the beta)
Cgminer 3.7.2

Every time i start cg miner with intensity 13 my screen goes black and the pc crashes. I tried undervolting with ab to 1000, 1050, 800 etc.

Worksize is 256
Also i have the - g 2 in my bat file
Gpu980
Memory1050
But i tried different ones.

Can anybody please help me i`m tired of restarting the pc when it bricks.

Before the 7990 i mined with the 6950 and 5950 without any problem.

I think the problem is the thread concurracy but i cant figure out the right one, maybe im talking bullshit i dont know.