Question PC won’t turn on

[rexcat202]

I just finished building a pc and i have a problem. The pc won’t turn on from the power button or jumping it with a screwdriver. It only turns on when i flash the bios and it still won’t turn off unless i switch off the power on the psu. I don’t know what the problem is and would appreciate any help.

specs:
ryzen 5 5600g
msi b550 gaming plus
gskill aegis 2X8
seagate barracuda 2tb
corsair cx650m
phanteks p300 case

 

[Brian Boru]

Check the wiring from the power button to the motherboard. Those fiddly little cables with their fiddly little connectors going onto fiddly little contacts can be a real… well, fiddly experience

I realize the failure of jumping it with a screwdriver indicates that's not the problem, but it's an easy check to do. There's a good chance another of the fiddlies is connected to the power contact, and the power cable is connected to something else—maybe that bad combo is messing things up.