I'd think it's the PSU, You're really pushing a 600 watt PSU (Neweggs simple PSU calculator says your set-up uses 615 assuming one HDD, which means you should have atleast a 650-700 for safety).
Usually an overworked PSU wouldn't shut you down until you were doing something to strain it, but if you got a weak unit it could shut down right away
Reputation Points: 124
Solved Threads: 36
Practically a Master Poster
Offline 604 posts
since Jun 2008