System Restarts

My computer restart after a while of work with it, some times after an hour sometimes more.

I've got something like:

Error code 1000008e, parameter 1 c0000005, parameter 2 805603b7, parameter 3 b7742cac, parameter 4 00000000.

I tried 4 fresh Windows Installs

Can Anybody help me??

I'll atach the minidump files

Hi,

The culprit is faulty memory. Probably it is faulty video ram as two minidumps crashes at graphical processing. It may be caused by faulty ram.

There have tools to stress test the video ram. Run memtest to stress test the ram. If the ram pass memtest, it is faulty video card.

Updates

i have done some test in this days:

- First i removed the video card and used only the motherboard integrated one, system still with problems

- After that i interchanged the RAM modules with my bro computers, mine still restarts, so memory isn't the problem

- I reinstalled the video card and the memorie modules on my computer

- Deactivated the HT feature in the bios and the problem is gone, no more restarts

Anybody knows if an application can be the responsible of this? i use the latest bios from intel and i would prefer to have HT active so if I can isolate the problem it would be better.

Here is a Microsoft article about Hyperthreading: http://support.microsoft.com/default.aspx?id=817027