bit of a strange one this.
i`m looking into a PC problems for a colleague of mine which so far has me and him stumped. Its to do with a Fujitsu Siemens PC. at first it seemed to turn it self off radomly.
Then we found that if you did a cold boot it started fine and would run for a random time then just shut itself down, after which if you try and restart it, you get the BIOS splash screen then it just turns itself off and just continues to do this when ever you try and start it. After about an hour you can start it up and everything's fine again until it turns off after an hours use.
Initial hardware tests show memory, and hard disk scan are all good, my initial thought were power supply. Has anyone else encountered this?