Unplugged fan from fan hub and now my computer won't turn on

rigibeh

Prominent
Jul 3, 2017
1
0
510
I unplugged my water cooler fan from my fan hub to try and figure out what was causing a coil whine. When I turned on my PC (with fan unplugged) it turned off after like half a second. All the fans and lights come on, and then go out. the PC then turns on by itself every 5 seconds or so, just to be turned off immediately after. This repeats until I turn off my PSU. When I plugged the fan back in, it still did the same thing (fan was still working).
Any idea as to what the problem is?