I've been given a Fujitsu Siemens Scaleo 600 (2.6 Pentium 4, 120GB HDD, 1GB RAM, XP Pro)it had been diagnosed by a local computer shop as having either a CPU or mobo fault and not being economic to repair. I reloaded XP, it worked fine for a day, then just died and wouldn't even POST. I replaced the power supply and the graphics card but nothing. I bought a replacement mobo (guaranteed working) fitted it but nothing. I bought a replacement processor - nothing. I then tried the new CPU in the old mobo and eventually got it to boot using the XP disk. I reloaded XP and all was fine, I had just finished loading the last of the Microsoft updates when the screen went black and it died again. Can anyone help me with this please, so far I have spent £60 on this free computer and I am determined to get it going!
Swapped the mobo back to the new one - no change Swapped the RAM - no change Fans all working Removed CPU, carefully claened it and applied new paste - it booted up immediately, worked for five minutes and then blacked out again. Mobo is a Gigabyte model for Fujitsu Siemens GA-81SXT-FS
Just to recap - Mobo has been replaced, CPU has been replaced, PSU has been replaced, Graphics card has been replaced, Memory has been replaced. Fresh install of Windows and I have checked Motherboard not shorting out. Only constants that I can see that remain are the case, the wiring and the CPU Fan/Cooler. Any more ideas please?