My computer restarts鈥?What do you think is the problem?

Here are the specifications of my computer:

MotherBoard:

With built-in video card

With 24 pins for power supply, but I am using 20-pins

Processor:

Sempron 2500 64bit (754) 1600Mhz

Memory %26 Harddisk

256MB DDR400 PQI

80GB SATA

OS: Windows XP

My computer restarts usually while playing games like red alert, warcraft, etc.

It also restarts sometimes while I鈥檓 surfing the net.

I tried to re-install the OS, and also install anti-virus protection. But the problem is still there.

What do you think is the problem? I really need your opinions. Thanks!

My computer restarts鈥?What do you think is the problem?network security

Random reboots are a tell tale signature of a failing power supply, in other words, your power supply is failing. I know this through experience, because its happened to me, and through exhaustive web searching.

My computer restarts鈥?What do you think is the problem?norton internet security

hey may be ur os files have been corrupted...y dont u repair the os if tat doesn't work reinstall the os tats the only solution...repair os option is available on the bootable xp cd...
Oooo.. wow, that's kinda ironic because I'm having the same problem with my laptop. However, I know the reason why my laptop is freezing. It's because It has the wrong type of ram installed in it, causing it to freeze up. The ram I'm using isn't defective, it just plain don't work correctly with my computer's components. That very well could be the case with your computer. However, this could be one of very many things.. There may be a driver running some of the hardware in your system that needs to be updated, could be wrong type of ram like I said, the fan that cools the processor (CPU Fan) may not be cooling the system adequately, causing the motherboard to automatically shut down your computer, or the CPU (processor) could be damaged. Your best bet, if you you're unable to pin point the exact thing by yourself, is to take the computer to a qualified computer technician at some local store, or a place like Futureshop or BestBuy. There's a lot of things that can cause a computer to behave this way.. If you built your computer by yourself, you'd know how tedious it is to make it work right. Hope this answer helps ;)