That's Just Prime

I installed Prime 95, which includes a "torture test", running your CPU at 100% and testing a number of the functions.

My computer reset by itself after approximately 40 seconds of running.

I tried installing ITE Smartguardian, which came on the disks for my motherboard. I think it's broken - it displays "Temp 1" as 201°C all the time. "Temp 2" is a slightly more realistic 48°C, but it doesn't seem to get any hotter while the stress test is running.

I rang the shop from whence the PC came, and they said they couldn't pass a diagnosis without the machine there to run tests on, so I will probably have to bite the bullet and take it in after work starts in the new year.

Edit: Oh, I should add that after my previous entry, I also downloaded a piece of memory testing software from Microsoft's site, and that checked my memory out as fine.