* PC shuts down during boot up at various stages, reset won't work and power switch don't work, have to turn power off and then on at rocker switch at back. * Eventually this gets worse until finally the PC won't boot at all. * First time this happened I replaced the power supply which worked, this time it didn't. All that happens is the fans spin for an instant and then stop, no boot occurs and I have to switch off at the rocker power switch at the back before I can get back to the same situation.
I had narrowed it down to either the mobo or hard drive by removing all PCI cards, except graphic for monitor.
For a similar problem in another forum I found a suggestion that it may be bad RAM, but this didn't work for me. Any help would be appreciated.
AS woodchip has said it sounds like your power supply has failed it is however worth checking your mobo connection is it pushed home? is your mains lead to the tower damaged? and has it got a 3amp fuse in? if you have a 13amp in you might have fried your mobo if there was a fault unknown to you.
Forgot to mention I have tried disconnecting then reconnecting the power supply plug to the mobo and it seems pushed home. I've checked the lead plug and it has a 5amp fuse, is it still possible the mobo could have been fried?
Have now tried removing/refitting cpu. Now fans don't even spin, nothing, it's dead! Am losing all hope, especially as I noticed brown resin-like stains on parts of the board. I think the mobo must be fried.How can I confirm this?