Computer on bootloop not starting

[digisatman]

Hey all,,

Got a really annoying problem on my desktop pc, was using it earlier, and the computer frooze, shut it down and tried to restart however the pc would switch on, fan would power up then shut down before even anything came on the screen, then it goes on reboot loop - start power fan for a couple of seconds - power off - and repeat constantly.

So far ive tried:

1. Replace PSU
2. Took out memory-reseated-tried only one stick at a time
3. Unhooked all cables, unhooked HD, reseated CPU heatsink.

And the problem still occurs as before.

Any ideas before all my hair falls out?

 

[mickyflinn]

Try building it outside of the case with bare minimum components, then add one component at a time.

 

[TWiNKLeT0Es]

CMOS reset been done?