Hopefully someone can help. I went to start my mate's computer the other morning and it switched itself off about 3 secs after powering up. I tried again but it would not post however the power remained on this time. There is no video signal at all but it is not the card as I tested it in another machine and it works perfectly.
I have reseated EVERYING, reset the cmos, removed the battery, changed the ram and even bought a new power supply. Everything on the board lights up as it should, the fans all spin but I cannot get a bios screen. I have pulled out all the drives and tried running it bare bones but still no post.
It is an ASUS P5N-E Motherboard with a dual core CPU not sure what model. The original PSU is a 650 watt Coolmaster, I replaced it with a brand new generic 400 watt PSU with no luck. The graphics card is a Gigabyte 9600 GT. Before I go buying another CPU is there anything else it could possibly be?
ANY help will be appreciated.