Firstly I have been through the checklist here: http://www.tomshardware.co.uk/forum/261145-31-perform-steps-posting-post-boot-video-problems
I built this PC about 2 years ago and it has suddenly decided to no longer POST. It shut down one night absolutely fine and the next morning it began having issues. There is no beep, usually there is a 'pip' noise that indicates it has posted successfully. It started turning itself off and on every few seconds which was fixed with a new CMOS battery. I have attempted to reset the CMOS using the jumpers on the motherboard although it's hard to tell if this has done anything as there is still no video output and no beep. I have stripped the system down to to just the motherboard, cpu, psu and 1 stick of RAM. I have tried my corsair RM750 PSU and another 700w which has made no difference. I have tried 2 different types of ram, 2 different monitors and nothing seems to make a difference. Removing the RAM completely does produce the expected beeps from the onboard speaker so I'm not sure whether the problem lies with the motherboard or the CPU. I only have the one motherboard and cpu so cannot find a way to identify which is causing the issue.
Specs:
MTB: ASUS h81M-A
CPU: Intel i5 (unsure of exact model)
ram: tried both corsair and kingston
Sorry if I've missed anything out. Thanks in advance
EDIT:
Currently turning on by shorting the power pins, the fans and motherboard light power on but there is not POST success beep or signal to monitor.
EDIT: New motherboard has fixed the problem.
I built this PC about 2 years ago and it has suddenly decided to no longer POST. It shut down one night absolutely fine and the next morning it began having issues. There is no beep, usually there is a 'pip' noise that indicates it has posted successfully. It started turning itself off and on every few seconds which was fixed with a new CMOS battery. I have attempted to reset the CMOS using the jumpers on the motherboard although it's hard to tell if this has done anything as there is still no video output and no beep. I have stripped the system down to to just the motherboard, cpu, psu and 1 stick of RAM. I have tried my corsair RM750 PSU and another 700w which has made no difference. I have tried 2 different types of ram, 2 different monitors and nothing seems to make a difference. Removing the RAM completely does produce the expected beeps from the onboard speaker so I'm not sure whether the problem lies with the motherboard or the CPU. I only have the one motherboard and cpu so cannot find a way to identify which is causing the issue.
Specs:
MTB: ASUS h81M-A
CPU: Intel i5 (unsure of exact model)
ram: tried both corsair and kingston
Sorry if I've missed anything out. Thanks in advance
EDIT:
Currently turning on by shorting the power pins, the fans and motherboard light power on but there is not POST success beep or signal to monitor.
EDIT: New motherboard has fixed the problem.
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