Desktop Build Will Not Start

[deliriumtr1gger]

I have an old Cyber Power build from 2008 that had problems starting up. Usually it would take 2-8 pushes on the power button for the desktop to start at all. Recently after powering down the system and leaving it off for a week the system will not start at all. The mobo light is on, if I flip the PSU switch on the back off then on and everything lights up for about 1/2 to 1 second then turns off. Pushing the power button does nothing.

I tried removing all cables except the power cable.
I tried cleaning the CPU and making sure everything was connected
I tried tracing all cables to make sure they were in place
I removed the graphics card and tried to start it nothing changes

My suspicions are either the PSU or the MOBO itself. I do not have access to another PSU to test if it is but I assumed the PSU isn't the problem since it does trigger for 1 second after flipping the switch? If it is the MoBo what specifically on it could be the problem?

Specs:
Motherboard = Asus M2N SLI NVIDIA nForce 560 SLI MCP Chipset DDR2/800 SATA RAID
CPU = AMD Athlon(TM)64 X2 4800+ Dual-Core CPU
GPU = nVidia 8800 1 GB
Stock Power Supply Unit 650 watt (not sure what brand)

 

[drkatz42]

I have an old Cyber Power build from 2008 that had problems starting up. Usually it would take 2-8 pushes on the power button for the desktop to start at all. Recently after powering down the system and leaving it off for a week the system will not start at all. The mobo light is on, if I flip the PSU switch on the back off then on and everything lights up for about 1/2 to 1 second then turns off. Pushing the power button does nothing.

I tried removing all cables except the power cable.
I tried cleaning the CPU and making sure everything was connected
I tried tracing all cables to make sure they were in place
I removed the graphics card and tried to start it nothing changes

My suspicions are either the PSU or the MOBO itself. I do not have access to another PSU to test if it is but I assumed the PSU isn't the problem since it does trigger for 1 second after flipping the switch? If it is the MoBo what specifically on it could be the problem?

Specs:
Motherboard = Asus M2N SLI NVIDIA nForce 560 SLI MCP Chipset DDR2/800 SATA RAID
CPU = AMD Athlon(TM)64 X2 4800+ Dual-Core CPU
GPU = nVidia 8800 1 GB
Stock Power Supply Unit 650 watt (not sure what brand)

Try clearing the cmos(remove the battery and put the jumper into the clear position, put the battery back and put the jumper back to the normal position). If its the MB, then it needs to be replaced.

 

[deliriumtr1gger]

Try clearing the cmos(remove the battery and put the jumper into the clear position, put the battery back and put the jumper back to the normal position). If its the MB, then it needs to be replaced.

I reset the CMOS and nothing - it flashed as if everything was going to turn again but went dark and nothing turned on. However, I do hear a humming or chirping noise very low coming from the mobo that I didn't notice hearing before. Is this normal?