PSU stuck in testing mode!

NoN_Damnight

Honorable
Dec 17, 2013
2
0
10,510
Hello,
So today I had to change the coolent and some tubes in my watercooling system. Then I used the jumper on the power cord for the motherboard (the big thing), so that only my pump would turn on. Now it appears to be stuck in that mode. When I plug in everything it will only power fans and pump (maybe the SSD too, can't verify), but not boot. When I plug out literally everything, the powersupply fan will start as soon as I turn the PSU on. The Jumper is not inserted at that moment, but it seems the PSU "thinks" it is.
I doubt I wet it since it appears to be dry, I don't know how or if I messed up something. Any advice is much appreciated!
PS.: This is the Jumper I'm talking about: http://www.guru3d.com/miraserver/images/reviews/watercool/waterchill-2/DSC05830.jpg