PC booting for 20 seconds, turns off. Turns back on itself, Loops Need help bad

[mainlysin]

Hi my PC yesterday out of nowhere just shut down. When I turned it on again, it just turned on for ~20 seconds and then shut down. 5 seconds later it turns back on and loops.

I dont know if its my PSU because all the fans from the GPU to cpu and the Chassis fans all light up and work; however, there is no display on the monitors. I am not sure what to do anymore. Googled all day yesterday searching for solutions. I am a comp sci student and im really in need of this PC as it is my only PC for my work.

The CPU is a Ryzen 5 1600x and PSU is a corsair CS550M.


I had unplugged each component one by one to see what would cause it. When I had unplugged the CPU, the computer didnt turn off. So it is either the CPU or PSU. That I am not sure of. I had already cleared CMOS and still no avail.

Please and Thanks.

 

[norcalsc]

full system specs please. has the system been working for a while?

 

[mainlysin]

Yes system has been working for around 9-10 months. Has a Gigabyte GTX 1080, 8gb ddr4, ryzen 5 1600x, Corsair CS550M, 2TB hdd

 

[immrspy]

It may not be your CPU, as when a motherboard does it's booting, it goes in sequence. Typically it goes -> Motherboard -> Motherboard BIOS -> CPU -> RAM -> Storage -> Everything else. Make sure the RAM is not the issue.