I was playing metro last light and I had low fps, so I turned the graphics down and restarted the game. While the game was showing company logos, the game freezes and lines appear everywhere. I try to tab out and get to task manager but nothing happens. I eventually force shut down my computer.
When I turned it back on, vertical lines were in the loading windows bar and once it got passed that stage the computer just black screened before getting to log in. So I tried again, ran it on safe mode and it worked. I uninstalled the display drivers and rebooted it. I could now log in and use the internet on normal mode, but still with lines over my screen and no working graphics card. I have now replaced the AMD radeon 6800 with my (very) old AMD radeon 4350. My computer works fine now, except i can't play any high graphic games!
I can't work out what is wrong with my 6800. I thought it might be an overheat, but then I wasn't actually playing the game, and I've played much more high powered games like Crysis 3 and it was fine. Does anyone know?