Extremely strange cooler problem

Jimbob1

Distinguished
Jan 22, 2013
289
4
18,815
I just installed my H80i and plugged it in to the PSU, when I done this my PC wouldn't start at all. I unplugged the watercooler and it starts fine. When my PC is on, I plugged in the watercooler and as soon as I switch off my PC, it turns back on.