Games on windows crash after CPU upgrade (With BSOD 1 time so far)

[salehram]

Hello

I have upgraded my CPU from Core 2 Duo 2.6mhz, to Core 2 Quad Q9500, and I had to upgrade the BIOS for my motherboard before that
MB type: GA-EP35-DS4

Everything worked fine for that, except when I run a game, it takes it about 10 to 12 minutes before it just crash and close itself (with no any error message), currently with:
Deus Ex: HR, Starcraft 2, Minecraft
I only get the error reporter for the games (if they had one) and no useful information I can get from them
I suspected the heat issue, so I bought a new cooler, the heat now in sticking on 37, no more
but still I am having this issue

My configuration are:

1. MB: GA-EP35-DS4
2. CPU Intel C2Q, Q9500
3. 8 GB RAM (Kingston) (2gb x 4 sticks)
4. Nvidia GTS 450 (As GPU)
5. Nvidia 9500 GT (As physix)
6. 1TB HDD WD
7. 320GB HDD WD (for system)
8. 500GB HDD WD
9. 500 watts power supply

Now I am thinking about the power supply, but the thing is everything was OK before, and I did not face any power issues before, all the problems started after I upgraded my bios and CPU

I checked the heat status and voltage status with CPU-Z stuff, but I am not fimiliar with the correct voltage values for RAM and CPU

Any suggestions about the issue?

PS: And the windows was on my computer since Jul 2009, and I would love to keep it from that date, I would not prefer re-installation unless there is no other option)

Regards

 

[yowanvista]

It might be a defect in the CPU
Run Prime 95 to test your CPU. Carefully the instructions in this tutorial: CPU - Stress Test with Prime95. Run 3 separate tests, one on each of the settings (Blend, Small FFTs, Large FFTs). Post back with your results.