PC boot up

[hr_thorin]

Hey all, I have a pc I built a year ago and am having issues starting it now. I shutdown the pc and next day it does not restart. I can get the pc rebooted but I have to use another power supply 24 pin connector to the motherboard. I connect the other 24 pin to existing motherboard and pc will boot. Shutdown and change 24 connectors back to the power supply in the new build. I press start button and pc loads to reset bios, reset bios and pc reboots with no issues. Shutdown at the end of the day and try to reboot, same process over again.

[STRMfrmXMN]

What are your complete system specs?

[samiscool51]

mother board BIOS seams to be corrupted, try flashing it with a newer version

[hr_thorin]

Posted specs now.

 

[hr_thorin]

ASUS Maximus vii Hero motherboard, Intel I5-4690K, EVGA GTX 970 FTW+, EVGA 850G 850 watt 80 plus PSU, 16 GB G skill ram, Corsair H100i cpu cooler