when i try to run games in general, this computer restarts. the games i tried are age of empires, counter strike 1.6, dod, and star wars battlefront. the computer will restart after ~5mins of gaming. it will also restart if you have music playing, watching a video and having a browser open. it can even restart when the computer is running idle, on occasion i downloaded atitool, when i scan for artifcats, it will scan for 2 mins and then the computer restarts. heh im thinking its a hardware issue, i downloaded avg free, and this computer has no apparent viruses. could it be a video card? perhaps RAM? the RAM in this computer is some random brand called 'DRAM masters', so i doubt it is well made compared to cosair or something like that. i went to administrative tools and checkd the event viewer, nothing is wrong with that... PSU? Mobo? this has been happening for about a year, then i replaced the hard drive, reformatted and the problem still occured. this is why i thnk it is a hardware issue. is there some software that can monitor the computers performance?