My pc won't turn un until i plug the 24-pin cable out and then in again

deess08

Prominent
Jul 3, 2017
2
0
510
Whenever I turn off my pc and then restart it, only the cpu and gpu fans start spinning, I get no output to the monitor and the chassi fans do not spin, then I unplug the 24-pin cable from my motherboard and turn it on again and it works but whenever I turn off my pc or it goes into rest mode the same thing happens.
MOBO: asus strix z270h Psu: corsair 650m
Is it the powersupply that is the problem or the mobo or perhaps the 24-pin cable that is the problem?