I have a problem with my new i7 system.
It keeps powering off, when i open games like cod4 or nfsshift even Crazy machine 2.
The strange this is that i can run call of juarez bound in blood at max with out any problems.
I have used linx, prime95 and occt tools to stresstest the hole system invidualy.
And i get no error even after 2 hours of stress test.
I use windows 7 rtm ultimate 64 bit
and my system is
cpu : i7 920 none overclocked
MB: Asus rampage 2 gene
gfx: gainward gs 275 gtx
memory. 3x2gb ddr 3 crosair xms3 pc12800
Just tried to check that.. seem like the motherboard in auto setting have set the timings to 8-8-8-24 insted of 9-9-9-24....
Very strange... now i can play gta4 with out problems.. just gonna redownload cod4 in steam to check that..
Those stress tests don't really test the RAM much. Memtest86+ is the best at detecting faulty RAM. I bet the reason the timings were so tight is that the RAM is being run underclocked for compatibility reasons. You should manually set the RAM speed/timings/voltage to the recommended specs and then run Memtest86+ overnight.
Which exact RAM kit do you have? All these match your description:
If you're still having these problems after manually setting the RAM settings and running multiple passes of Memtest86+ without any errors then I would say the PSU is causing the problems. The fact that it crashes when it tries to go into 3d mode would indicate that the PSU can't deliver enough clean power when put under load.