Hello, I have owned this computer for over a year now, It has had the same problem since I first turned it on from purchasing at the local PC World.
Certain video games crash the entire system, I'm sure it's a GPU error as the screen turns completely into static, then I hear the audio slowly crash, then the whole thing stops working.
I have all updated drivers, defragged, checked system for errors.... problem still persists.
AMD Radeon R7 240
May I point out, this doesn't happen on all games. GTAV runs perfectly for hours on end, yet Call Of Duty WAW crashes ten minutes in.