Last week I was playing World of Warcraft and then all of a sudden there was a mini explosion from my HD and everything went off. I realised my PSU had packed in and when i opened up my HD I didnt notice any damage to my MOBO, graphics card etc.
I bought a replacement PSU and installed it and plugged in all the wires as they were before. I had a new monitor which I also connected to my PC and then switched it all on from the wall socket. My PC came on without me pushing the on switch on my HD but with no beeps and the monitor went to sleep. I plugged in my old monitor and that went into sleep mode too.
I have checked inside my HD and all fans (PSU, CPU, Graphics card) are working and so is my hard drive and the lights on my disk drive are on.
Old PSU specs: Zoostorm model zoo-6300HP, ATX12V, OUTPUT 300W New PSU specs: PowerX2 std edition ATX-450204, OUTPUT 450W
Some time back I had the lid of my desktop and I accidently touched the fan (it was on) with a screw driver; it made an almighty crack after which I had no monitor aciivity and I had to get another graphics board.