This has been going on for about a week.

My PC has taken on a habit of completely shutting itself off. The whole package. It should be noted that this usually occurs when playing games (Most recently BF3 and The Forest) and not when doing any other tasks. Also to note, the week before last I installed a new Sapphire 7950 and an EVGA 750B2. I would point to these as the problem, but the problems started a few days after installation and not immediately. I've tried everything. Taking off my overclock, putting a fan by my case (as all of the shut downs excluding the last two when I had a fan beside the chassis were accompanied by heat) and even moving my case to an area with better ventilation. Nothing seemed to help. Save me, R/TechSupport

Specs:

AMD FX6300 @3.5, previously @3.9.

8GB Crucial Ballistix Sport 1600MHz.

Sapphire 7950 reference design.

EVGA 750W B2 Semi Modular PSU.

AsRock 980de AM3 MoBo

NZXT S340

I don't believe I forgot any parts, other than storage, which shouldn't matter. Please help.