Question PC Immediate Shutdown after plugging USB in; Won't turn back on.

MrsAverageMan

Honorable
Dec 7, 2014
24
0
10,510
Hello all!

Currently dealing with a potentially fatal PC issue. My PC was working fine, until an Xbox Wireless Adaptor was plugged into an Anker 4-port USB Hub located in one of the front USB 3.0 ports. Upon plugging it into the Hub, the PC immediately turned off and will not turn back on.

I have tried:
Removing the battery, clearing CMOS.
Disconnecting the front USB panel and booting.
Reseating all components.

I have not yet tested the power supply. Should also say that when I clear the CMOS, pressing the power button lights up the motherboard and GPU for all of about 0.2 seconds and the GPU fans spin about 1/8th of a rotation. After that, it becomes unresponsive again.

Does anyone have any ideas to what it could be as I've been using the front panel fine for the past 5 years and that USB Hub for about 2.

TIA to anyone who can help!
 

MrsAverageMan

Honorable
Dec 7, 2014
24
0
10,510
make and model of the psu?
full system spec?

Corsair CX500M

Intel i5 4670k
Nvidia GTX 970
MSI Gaming 5 motherboard
1xSSD
1xHDD

Interestingly. the PC boots and operates fine without the GPU in it. Running directly from the motherboard is faultless. As soon as I plug the GPU in, the PC refuses to boot, tried in both slots. PSU issue?