Hi guys, got a bit of an issue with my PC. Spec is Windows 7 x64, 4GB RAM, nVidia 8800 GPU, AMD Phenom Quad Core 2.4GHz and a 1TB HDD and 130GB HDD. Story is, my PC boots up fine, no problem, logs in fine too. However, after about 2 - 10 mins, Windows freezes. No warning, no error, nothing! Power is still going to the PC.

Ran ScanDisk on both drives but they came out clean.

Ran Disk Defrag, no problems found.

This also happens in SafeMode.

No strange things found in MSCONFIG, Startup Folder, Registry.

Virus scan ran, nothing found.

I have 2 theories:

1. My room is too cold for the PC to operate* (but if this was the case, the PC just wouldn't power on, would it?)

2. PC might need cleaning.

*The weather in the UK has been really low these past few days and this issue only happened at the beginning of the week as the temp lowered.

Thanks in advance for your help.

-FireFox276

Any strange errors in Event Viewer? Does the CPU spike for any programs? Is there an unusual RAM usage by any of the processes?

Nothing out of the ordinary in Event Viewer, I had task manager opened one night to check for CPU/RAM spikes but they were normal.

Hard to say if this is hardware related, the fastest way would be testing it with a clean install.

I would backup the stuff that is needed and format that system, after cloning/imaging it so you can restore your old setup quick if a new install didn't help. Re-seating the video card could help too.

Cleaning out the CPU fan and checking the RAM (with memtest86) would be also a good start.

I would try to replace the video card of course if you have already one at hand.

I would also run memtest for at least two passes.

Edited December 5, 201015 yr by allen2

Thanks for the reply's folks. Without running memtest I took the RAM out and gave it a clean (there was dust on the connectors). After this (and a PC de-dusting) my PC is back to normal.

Thanks for the help.