system crash problems... anyone had this happen?

[locutus12]

i recently bought some corsair XMS 2X 1gb stick memory and have installed it and set the settings for it and my cpu as follows

The problem is that every so often my system graphics lock for about 30 seconds then the screen goes black and my graphics card fan kicks in for a moment as if the system had rebooted and then everything goes back to normal as if it performed a vpu recovery???

any clues ?

p.s. the card is at stock.

 

[earlyflash]

Sounds like the gfx is on it's way out. If the only recent change is the memory, I'd put it through a memtest just to be sure that it's 100%.