Built new computer - when I try to power it on it will turn on for a half second to shut down.

Archer87

Honorable
Aug 18, 2013
6
0
10,510
As the title says, built a new computer and when i try to power it on it will power on for about .5 sec then power down. I also here a little zap noise but Im certain i have everything plugged in correctly

cpu- i5 3350p
mobo- asrock b75 pro3-m
ram- kingstone hyperX black 8gb ddr3
psu - raidmax rx-630ss 630w
 

Archer87

Honorable
Aug 18, 2013
6
0
10,510
thanks for the help but its just a case of extra stupid on my part when I thought I was turning the psu on I was actually turning it off -.- but thanks for trying to help =D