So i need some help to figure out this problem before i take any steps in purchasing a new part.
Basically computer not turning on after shutting down automatically through UPS [power outage]. I thought it was the PSU problem, but i did the paper clip test where you short it and the fan started spinning. Also, when i unplug the cpu power cable from the motherboard, a red light came on. When i plug it in again, it went off, so i took it as indication that the psu was delivering power fine. Also can a damaged cpu cause this? I do not want to take this out to check as yet.
I know that overheating can cause major damage to components, and i had one such incident after installing a RTX 3070, my pc overheated and shut down, i had since left my case opened while using it, to prevent the overheating and it worked fine after that until now.
Right now i am thinking the motherboard got fried or something, so i would like to know any other causes or troubleshoot i can do to pinpoint the problem. (I do not have spare parts lying around i can swap in to check)
here are the specific parts if it helps:
-Gigabyte Rtx 3070
-Corsair RM 750x
-ROG Strix B-550A Gaming motherboard
-Amd ryzen 5 5600x