My pc restarts when playing games

-The Doctor

Commendable
Jul 7, 2016
7
0
1,510
Ok guys I need serious help. My pc is brand new, prebuilt, and it SHUTS DOWN THEN RESTARTS when playing high graphics game like Assassins Creed unity and sometimes it restarts when playing fifa 15. On Assassins Creed unity it restarts on title screen, once I managed to play it idk how for 10 min and then it did it again. I personally think this is a psu problem but here are The specs:

Intel i7 4790 3.6ghz
Zotac gtx 970 4gb edition
8gb kingmax ram
Energon eps-550w(which I think is bullshit)


I think this is not an overheating problem cuz The temps are "normal" when gaming but it can be if it doenst have Power too run it on full load.
If it is The psu problem which I think it is can you guys recommend me a good psu of 750w(dont ask me why) and if it isn't that what is it then?
 
Solution
Just as you said, your problem is most likely the PSU. Get a real one with 80 plus certification, even if it's not your problem right now, it eventually will be.