Quote: Originally Posted by loquacious
I am seriously thinking the MOBO has died or at least has intermittent fault but do not want to buy another one to find the thing still won't boot but what else is there .. I have ruled out CPU, graphics card, ram and PSU unless the generic one (which is brand new) is not powerful enough but at 400watts it should easily run the system. The original PSU seems to be working ok anyways and it is a 650 watt coolmaster
Certainly sound like it. From the sounds of things you have rules out everything else, so the motherboard is all that is left. Give it a thorough once over playing particular attention to the caps, looking for any that may be bulging (even slightly) or possibly cracked.
As far as getting a new one, before going that route if it is less than 3 years old, I would contact Asus about getting it RMA'ed. Be without a computer for a couple of weeks (if it is still covered and accepted, should only take 10 days), but cheaper than getting a new board.