Ok. Having purchased a new motherboard, new memory, CPU and fan, I STILL can't get Windows to boot. The hard disc is obviously screwed, so i'll buy a new one tomorrow.
I have noticed that once the mains power is switched on the hard disk light on the front of the computer comes on, even though I haven't yet actually turned on the computer. Does this indicate a jumper problem somewhere on the motherboard, incorrect wiring or is it likely to be related to the knackered HD itself?
Incidentally, this all relates back to this:
from November. The reason it's taken so long is that I ordered the products from Dabs at the beginning of December and they only got delivered yesterday, after several increasingly threatening emails.
Any suggestion anyone?