AMD Driver Problems (screen splitting)

[imeegas]

Hello, today while playing games my screen messed up somehow, it randomly started flickering with horizontal lines across it and then the flickering stopped and part of the left side of the image was being displayed on the right side of the screen. Every few seconds the image would change so a bigger or smaller portion of the image would display somewhere else. I tried taking a screen shot of this but the display showed fine on the screenshot. I have the AMD Radeon HD 6850 graphics card and this happened while playing Dota 2 and CSGO which are not graphics-intensive games. I've played much more graphics intensive games in the past 4 years that I have had this computer for and I have never had this problem. I also tried updating the drivers but apparently they were already up to date.
In some extreme cases, the screen just turned grey and all I could see was the cursor but my PC was not responding. I was on skype with people while this happened and all I could hear was feedback when this happened.
EDIT: Got a photo of the problem. It only started occurring after being in the game for a while. Weird black lines also started appearing randomly as you can see coming up from the gun and scenery in other photos i took.

The problem persists even if I close the game or log off and log back on, play around with resolution settings etc. Only thing that fixes it until I play a game again is restarting my PC. When I close the game one side of the screen (as it has been split into 2) looks fine while the other looks blurred.
Any suggestions?

 

[imrazor]

I recently had problems with the latest AMD Driver and had to rollback to the previous version. The easiest way to do this is to go to Device Manager, click the + next to Display Adapters, right click on your AMD adapter, click on Properties, click on the Driver tab, then click on Roll back driver. If you want to be thorough, you could go to Control Panel>Programs and Features, uninstall the AMD drivers, and then download and install the previous version.

 

[Vasim92]

check your gpu temperature of gpu . and try to update your drive of gpu .

 

[imeegas]

I tried rolling the drivers back as suggested. This time the screen did not split, the driver just crashed and my PC restarted itself.
The GPU reaches about 65-70C while gaming. It has done this for the past few months (used to be lower but one of my case fans broke) and it has been fine.
I tried updating but it said it had the latest drivers.
EDIT: I just ran a GPU stresser, once the GPU got to 78*C that's when the screen splitting and PC crashing started.
Would improving my case cooling fix this or do you think i'd need a new GPU?