Screen blinking and driver crashes

[Luak]

Hello everybody, i have big problem.

When i start, lets say, battlefield 3 my screen starts to blink really fast (only when game starts, not while lodaing or while i am at main menu).
The blinking stops when i alt-tab to deskop but i need to do it really fast and when i return to game i can play all day long without problem.

I have noticed that this happens when my fan goes to 90-100%.
Cuz all of this problems i have reinstalled my new windows. But since i have did that i am still stuck at that problem and got new one, your display driver has stopped responding and recovered wat happens while i am watching youtube, not allways but often.

Few more notices:
1. if i dont alt tab while screen is blinking my computer will crash, black screen with stuck sound or blue screen.
2.I have tried all drivers, new and old ones.
3. Win 7 reinstalled
4. My temperature while playing games is around 90 Celsius / 194 Fahrenheit.
5. there is no dust in around gpu or cpu, its all cleaned.
6. computer is 10 months old, blinking started 6 months ago, driver crashing started few weeks ago.

My computer is:

i5 3350P
Ram 8 gb
Hd radeon 7870 2 gb
motherboard is socket something something, not sure. (will edit if needed)
430 W
ATX Akyga AKY005BL
Windows 7 Ultimate 64 bit
Monitor : AOC 21.5"
I use hdmi cable.

sorry if i misspelled something and thanks in advance.

 

[COLGeek]

What make/model is your PSU? This could simply be a case of an inadequate or defective PSU that is failing under load causing the GPU to fail.

Also, does this "90 Celsius / 194 Fahrenheit", refer to your CPU or the video card (GPU)? Either way, that is too hot.

What are your operating temperatures at idle and under load for both the CPU and GPU?

Also, are you overclocking anything (CPU, GPU, memory)?

 

[Luak]

PSU is xfx core edition 80+ 450w

90 celsius is temparature of graphic when i am playing games.

While im in games
http://prntscr.com/4notcu

Normal temps while on deskop
http://prntscr.com/4noxpe

I did not overclock anything, only incresed fan speed cuz of temperatures
http://prntscr.com/4noxxo

 

[COLGeek]

Your video card is getting too hot and is likely the cause of the problem.

Specs for the HD7870 Ghz Edition site a 500w PSU requirement. However, your XFX should be sufficient, especially since you are not overclocking.

How many case fans do you have installed? Does the GPU temperature drop significantly if you run the system with the side of the case removed?

 

[Luak]

This is when i remove side case
http://prntscr.com/4npc2l

I think i have only one fan, here maybe this will help
http://prntscr.com/4npems
http://prntscr.com/4npevl
http://prntscr.com/4npf4n

akyga gamer atx comp case

I guess you are gonna say i need another cooler, if that is so i would really appreciate if you can tell me witch one is best for my problem

 

[COLGeek]

Yes, a rear case fan would do wonders in removing hot air from inside your case and exhausting it out the back. That looks like a typical 120/140mm fan mount.

Where are you located? Something like this is all you need:

http://www.newegg.com/Product/Product.aspx?Item=N82E16835103069

 

[Luak]

Croatia, sure will by it, thanks for help man

 

[COLGeek]

You are most welcome. Good luck!