Question Computer shutdown, only CPU, RAM & SSD/HDD running then i press the start button

Mar 28, 2019
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Hey,

My computer is random shutting down then im idling on the internet (Netflix) and then i press the start button, only CPU cooler, RAM & HDD/SSD running.

I only got this problem the last 2 days, first time i just cut off the power on the PSU and wait about 30min - 1 hours, and the computer works fine again, but today i got this problem again.

Maybe a software issue? or hardware?

My specs:
I5 9600k
RTX 2060
16GB RAM
MSI PRO Z-390
Corsair RM650x
Windows 10