PC resets at startup and then boots fine

CallumP227

Honorable
Aug 3, 2013
144
0
10,710
Hello,
when i turn my pc on, after a few seconds it will just power off completly, and then it will reboot and boot just fine, and everything runs just fine with no issues at all. but it did not always do this so i was wondering if it is a cause for concern as i have tried swapping out components but cant seem to figure out, what the issue is. Full system spec are as follows.
http://uk.pcpartpicker.com/p/mWLzZL
I do not run the pc overclocked but have overclocked it to see how far i can get it.
 

CallumP227

Honorable
Aug 3, 2013
144
0
10,710
also if shut it down and then turn it back on straight away then it boots straight up no problems at all, just had the thought that it could be because i turn it off at the wall and then when i turn it on, i try to boot straight away without giving it chance to deliver per-power to the components.