Weird Crash When Playing Games, HELP!

MisterG

Honorable
Nov 30, 2013
1
0
10,510
Ok, so for a long time now (soon a year) i have been getting some sort of crash when playing alot of my games (like BFBC2, BF3, Crysis 2, and some more, seems to be the more graphicly demanding games that suffer) I have been looking around alot for a solution, but no one seems to share my problem.

Here's the deal:
When playing said games, i'll be able to play them for 3-15 minutes before the crash happenes.
The sound and screen halts and loops for 1 sec. Then the screen goes black before saying ''hdmi no signal'' and my computer sorta shuts down. It doesn't turn off, i still see lights still on and the fans are still spinning. But i can't do anything from here, and i just have to force-shutdown the PC.

When i first got the PC (i buildt it) i didn't have this problem. It took about 3 months before it happened. I was at a lan at my friends house playing BF3 i believe, when it first happened. After a while a switched GPUs. (i have two of the same HIS 7970s) I allways had both plugged in, but rarely used crossfire. Only when playing BF3. So i took out the one in use and switched it out with the one just sitting there, stand-by in the second card slot. That worked for some time. I could play BF3, and other games, just fine at 60-100fps, almost max graphics, 60hz @1080p. But the problem returned, i can't give a specific moment in time.

I don't know what is causing it. It's not overheating, (it's always 55-75 degrees cecius in game) and i checked the cards for dust. I tried re-installing drivers. I tried tweaking settings in the bios and in CCC. I tried checking if anything was stealing power from the wall, and probably more. Nothing worked. I really need some help guys. I don't feels safe buying games now cause they might just crash. The only reason i'v been taking this like a b***t for a year is cause i'b just been playing League of Legends, Chivalry, Terraria, Minecraft, Diablo2/3, Fallout: New Vegas,
Modern Warfare 2, Counter Strike: Source and Skyrim, which all work just fine. (i think)
But there are games that i want (like BF4 and whatnot) that will probably suffer the same fate as some of my current games. Please help!

PC specs:
GPU: HIS Radeon HD7970 (x2, one in use)
CPU: Intel Core i7 @3.4 GHz
RAM: 8GB of Corsair Vengeance 1600MHz DDR3 (2 x 4GB sticks)
MoBo: Asus P8Z68-V Pro/ Gen3
PowSup: CoolerMaster Silent Pro Hybrid 1300W