Would something loose stop it powering up completely? No cooling fans or anything?
I've tried the PSU blosk already, but I'll have a go at everything else too.
I've discounted the dodgy switch idea after a trip to Maplins and installing a (temporary) replacement switch.
The next thing I was gonna was to connect up my other PCs PSU to see if that would help.
Thanks for the tips though
- all thoughts and advice gratefuly received.