Weird Auto Alt-Tab Problem

[Alan]

Hey guys,
So I've been having this problem since a while now, I've been searching the forums and googling like crazy the past few days, there has been threads about that but none that solved my issue, this is the only thing I have left to do and I hope to get the solution for it.
The Problem: When I play ArmA 2/ArmA 2 OA, I can play for more or less 7-8 minutes, then my game just alt-tabs to desktop, I've disabled Aero from the games property's, and now it just goes to a black screen, the only solution I got was to do Shift and - key at same time, sure it works, but after the same time amount, it alt-tabs again, sometimes I was getting a Grey Screen that would just freeze my monitor and I had to restart my computer, other time's I get the "Blue Screen Of Death". I remember at some points there was a message saying that my Graphics card crashed but has recovered. Also, it doesn't happen when I stay in the same area without moving around too much, but as soon as I start walking around and going to different places, it happens again.

I have no clue when the problem started to happen but it is very frustrating. I've tried so many things, and I can't seem to find the right solution yet. Any help will be highly appreciated since I really enjoy playing ArmA.

Sincerely,
Alan

P.S.: I have the Steam Version

=======================PC Specs========================
Processor: Intel(R) Core(TM)2 Quad CPU Q8200 @ 2.33GHz
Installed Memory (RAM): 8.00 GB (3.25 usable)
System Type: 32-bit Operating System
Video Card: AMD Radeon HD 6670
OS: Windows 7 Ultimate

[ProfTournesol]

Have you monitored your GPU heat ?

[Alan]

What heat should my GPU be and if it is over heating what should be the solution?

[[FRL]Myke]

What heat should my GPU

Around 70 degrees Celsius under load is good. If it goes significantly higher, then
- check if cooler works
- check for dust/dirt in the cooler and clean it if necessary
- check the airflow in your case. Make sure the CPU cooler gets fresh air from somewhere.

[Alan]

My CPU is not causing the problem, it's not going over 40 Celsius, any other suggestions please.. :S

[[FRL]Myke]

What about the GPU?

[Alan]

Sorry.. My GPU temeprature doesn't go above 40 Celsius, I Need to check my CPU real fast.

---------- Post added at 04:56 AM ---------- Previous post was at 04:48 AM ----------

Here is the CPU Temperature and information and all that stuff..:

[SnR]

ctrl -shift- minus and type flush. fixes my issues when the display driver crashes.

[ProfTournesol]

GPU temp should be monitored while playing, not only on idle state.

[Alan]

@SnR I'm tired of always doing that, it annoys the biscuit out of me, especially when I'm flying.

@ProfTournesol I'm gonna monitor it next Time I play and make sure to post an image on here.

During Gameplay: