I have the following problem for a while now and I've ran out of ideas on how to fix it.
So, while I play games, at random times, sometimes 5 minutes, sometimes an hour or more, my screen will become black and unresponsive. Sometimes I'm able to still hear the game sound after the screen goes black, and sometimes I can hear buzzing. The screen doesn't always go black, I can sometimes see, umm, lets say vertical stripes in different colours.
It happens in all games I play (Starcarft 2, League of Legends, Diablo 3..) and it is really really ruining the game experience for me.
Computer configuration is the following:
intel core i3 540 4
GB DD3 1333 MHz
radeon hd 5750 1 GB graphics
Samsun 24'' monitor
Win 7 64 bit windows
The computer is about a year old, and this problem wasn't happening from day one when I bought it.
So far I've tried many things including:
Antivirus scan - nothing was found
Memtest - no errors were found
Temperature checks - all temperatures were ok
Complete driver wipeout and reinstalling - didn't give any results
Motherboard, sound driver updates - didn't give any results
Various Catalyst Control Center tweaks - didn't give any results
Many many other things that I've read in threads where people had similar problem like me and it helped them
I am really running out of ideas and I'd really like to fix this.