Pc Boots for a second then my psu fan spins for about a second then stops it repeats this

[aiden29]

Everytime i turn it on my psu fan spins for about a second then stops, i tried cleaning it and it did nothing please help! Hp elite desk g2 800

[Bill_To]

Greetings @aiden29 

Welcome to the HP Forum.

The MB is power cycling. This would be a component problem.

Only connect a mouse, keyboard, and monitor. You could then also only connect a monitor to check for a good POST.

Next, reduce the PC to a minimum config using only core components required to get a good POST:

- Power supply

- MB and CPU

- Try each stick of HP factory installed RAM, one at a time, in each memory slot.

- Try onboard graphics if the CPU and rear MB I/O support this option.

- Try no RAM to check for a POST error code.

Note: Not seeing a POST RAM error message when no RAM is installed in the MB usually indicates a: PSU, MB, or CPU problem.

Next, swap in different, known good. core components, one at a time, until the system will POST.

Regards