Computer won't boot without unplugging it first

[jkb1970]

In the past few weeks, while doing anything more than browsing youtube and using discord, my computer will just turn off i.e everything goes black monitor says no signal and mouse and keyboard are off, leads on my case are off, and then I have to unplug the pc wait about 15 seconds then plug it back in and then it will boot. It happens while gaming, (Hearts of Iron 4 it happens a lot, Rainbow Six Siege it has just started happening to now as well.) Nothing seems to be hotter then it should, all fans are running properly. I recently just cleaned all of the dust out of my pc as it was causing overheating a few months ago. I have an older computer that I may take the PSU out of and switch and see if that makes any difference. I have done a visual inspection inside the pc and nothing is burned or looks off or smells weird. Also, the LEDs on the front of the pc do not light up properly (that started about 20 mins ago). The computer can go a day or two without issue and then do it again, so when I think something has worked I can't tell for a few days. I also turned the case fans up to high to help it keep cool. It has crashed when I used multiple things at a time to benchmark(I loaded up my pc on purpose to see if I could make it crash).

 

Asus M5A97 LE R2.0 Motherboard

500W PSU (I don't know what specifically)

Zotac GTX 1050ti 4GB GPU

AMD FX-8350 CPU (fan cooled)

16GB of DDR3 (I don't know the speed)

Windows 10 is loaded on a Samsung 850 Evo 256GB SSD

I have a 2tb hard drive for games and a 256Gb SSD for games.

I have 2 case fans running as well(not sure of speed)

I don't know what is going on, any help would be greatly appreciated

 

EDIT: CPU was overheating my cooler was dying.