Desktop power cycles every second after powering on

[APatani]

I just upgraded the secondary hard drive in the system and after putting everything back together the computer powers up (e.g. the switch lights up, the processor fan comes on, etc.) but immediately the system powers of,f and tries to power back again and repeats the is cycle. I have tried to see if disconnecting each of  the components I touched (e.g. on-off switch, DVD drive) would make any difference (it does not)) and also checked all the connections on the motherboard. Everything looks good - but the problem persists.

Any help would be greatly appreciated.

[babisarangi]

You can try to boot with only the boot drive attached, nothing else. Perform a clean install of windows. Only when the system boots to windows, you can try to reattach the secondary hard drive via SATA cable and see if it works.

[APatani · Accepted solution]

Thanks everyone.

IT IS SOLVED! I took all the components out one  by one to see if the problem went away. It did after I took all the memory out. I then reinserted each component and tested one at a time until the whole system was together.

I am not sure what caused the problem in the first place!

Amin

[APatani]

The system would cut out before even posting. It arose as soon as I turned the computer on. I suspected a power glitch caused by something.