I spent the week stealing components from another, reliable, working machine and proved that the crashing is not power supply, wireless card, graphics card or ram module related. It is not the software as it has been known to spontaneously restart before it has completed the POST. I also updated to Ubuntu 10.04 to see if that made any difference. I called Scan to ask about returning the motherboard and the CPU and they suggested I try updating the bios. This I have done and, fingers crossed, it seem to be more stable. 22 hours and no restart.
One thing that I have noticed is that the scroll wheel on the mouse doesn't always work. This feature has been hit and miss since the 10.04 upgrade. Any idea why? or how to sort it?
Rans6....