compaq presario 5140s

[papichulo1968]

basically the pc is reboting when I play certain games, like world of warcraft can this this be atributed to cooling, this has always happened with the system, all game hardware is compatible with the games.
this is my pc specs:
amd xp 2800
nvidia geforce 440 mx 64 ddr
768 megs pc 2700
win xp home
direct x 9c
that's basically is .

 

[Uncle Bob]

If it only reboots when playing games then, given your system specs, overheating would not be my first suspicion.

I'd suspect that you're getting a system crash due to some kind of driver problem. Check your event log for error messages and report back. Also, disable 'automatically restart' in the system properties dialog which you can get to by pressing the windows key + pause on the keyboard, on the advanced tab -> startup and recovery settings. This will mean that instead of just rebooting, you should get a BSOD error report which will hopefully help in pin-pointing the cause of the reboot.