I'm kind of having an issue right now where like, every game from Portal 2 to Garry's mod, Minecraft to Brink, after like 15 minutes of play time my computer just completely shuts down. No errors come up or anything, it just shuts down instantly like if you pulled the plug out the back. It boots right back up as if nothing happened, like it doesn't even ask me if I want to do the disk check when it starts back up. At first I thought it might be over heating, but I checked my temperature while play Minecraft and it never went above 50°C, and it crashed around 48°C. This all started like a week or so ago, and I haven't been able to play my PC that much because of it.
I've already updated my drivers and took a can of compressed air to the entire inside of the PC, didn't fix it.
Specs and stuff:
Power Supply: ATX 12V 350W


Wat do?