Open the laptop and clean it of dust, then re-apply the thermal paste.
I did clean it... but what do I have to re-apply? I don't know what is "thermal paste" sorry
I don't have anything related to "Overdrive" in my CCC
reviewing it, it might also be that your memory or cpu are getting hot.
This what HWmonitor shows me just after the crash i don't think they are over heated
View image: all
I just ended googling it. Do I need to do that for the CPU and GPU ? because I don't think I can do it.
Do not attempt to do this if you are not comfortable. It is a tricky thing to do and should be only attempted by a very knowledgeable user. If I were you, I would take the laptop to a computer specialist (like Geek Squad) and have them diagnose and correct the problem.
I just noticed that dxdiag show that my GPU have 4Gb memory even thought it have only 2Gb, can that be the cause ?
Edit: If I do a 64bits scan dxdiag show 1751MB memory