Computer generally left on 24/7.... got home to find it off. No power cut, just off.
Switched it on, and it'll last between 1 and 20 seconds, before powering down. Not a software fault - this happens before the OS loads.
Disconnected all connections bar 12v rail and main mb plug. Same. Removed all RAM, same. 1 stick of ram, same.
When working (for around 20 seconds) windows begins to load fine etc. No bluescreen - just powers down.
So, its either mobo or PSU, and I believe it to be the PSU. Just wondered if people agreed with me. The PSU also makes a strange clicking noise sometimes, and I believe that just adds to the evidence.
Secondly, I need this fixing asap, so looks like its PC World I'm afraid. Any thoughts on which one to go for. Need about 450-500watt.
The PSU is 2 months out of warranty with Hiper... which is annoying, and surprising because Hiper are a decent brand. Or so I thought :(