Computer screwed - Hardware issue ?

Hello guys, I've revently run into some issue regarding my computer, it tends to freeze whenever I'm playing a game, or even sometimes looking on the internet.

Although the weird thing is - I can actually manage to have the computer running all night (showing desktop only) and it actually doesn't freeze .

I am not sure whether or not this is a hardware problem. - Help would be appreciated.

But I can tell you that this problem only accured to me recently, I've had this computer for almost a year. I tried to reinstall windows, and it is not a heat issue either.

Best regards.
Danneh

Agree. All settings should be default, ie, not overclocked. If you get any errors from memtest running in standard mode, you've got a memory chip problem. If that checks out OK, you should post your complete system components.

Right, I did the test (ran it overnight) - But unfortunatly it never did a whole "pass" - It had suddenly stopped at about 67% (I couldn't use the commands either = Frozen). - Didn't show any "red" messages either .

Ill post my setup.

Intel Celeron 3,2 GHz
512 DDR2 Kingston
NVidia GeForce Galaxy 6600 GT
ASRock 775Dual-880Pro - Motherboard

Don't think I miss anything .