New build, slight problem

[exia]

Hey, built my system a few days ago, spec below;

Intel Core i7 920 D0 (@ 3.8GHz, OCUK Bundle) Noctua NH-U12P
Gigabyte EX58-UD5
Patriot Viper 6GB
XFX 4890 Black Edition
Be Quiet 750w
NEC 24WMGX3

Ok, my problem is sometimes the monitor will go black (no signal), the 4890 fan will spin 100% (god is it loud, bedroom sounds like a heathrow runway), and a red light will appear on the back off the graphic card. It seems to be random and not when I'm doing anything in particular.

The cpu overclock seems stable after running prime95/intelburn etc, the graphic card temps idle 53ish and loads 67c max so don't think it's an overheating problem.

Anyone got any tips to further find out what's the cause?

Cheers

 

[RJC]

What's the gpu temps whilst running, as it sounds like your gpu is overheating.

 

[exia]

GPU idles at 53C and loads at around 65C, thing is these crashes aren't happening whilst playing games, seems completely random.