Looks like it was the PSU after all. 
I switched on the other day and it didn't even recognise my hard drives. Can't reformat or anything, but they do register in the BIOS.
I ordered in a new motherboard as I have been tempted to upgrade for a while anyway, and managed to get hold of a cheap Asrock X48...
It arrived, I set up everything and it won't POST. No image on screen or even error beeps. The fans do spin however. I rebuilt outside of the case and did the usual 1 stick of RAM, no sticks of RAM, resetting CMOS, removing and replacing battery and having everything unplugged except CPU, fans and power. But everytime I change something it is the same result.
The motherboard could be DOA, but it's surely a lot likelier that the PSU is the culprit, right?
I switched on the other day and it didn't even recognise my hard drives. Can't reformat or anything, but they do register in the BIOS.
I ordered in a new motherboard as I have been tempted to upgrade for a while anyway, and managed to get hold of a cheap Asrock X48...
It arrived, I set up everything and it won't POST. No image on screen or even error beeps. The fans do spin however. I rebuilt outside of the case and did the usual 1 stick of RAM, no sticks of RAM, resetting CMOS, removing and replacing battery and having everything unplugged except CPU, fans and power. But everytime I change something it is the same result.
The motherboard could be DOA, but it's surely a lot likelier that the PSU is the culprit, right?
