My screen keeps freezing [G770]

A week ago, while playing a game my G770 laptop shut down (I recently switched from 32bit to 64bit Win). I tried to turn it on immediately but it couldn't start. I tried some 30 minutes later and it started normally. However, ever since then I get ocassional freezes that last around 5-10 secs and I hear a single 'click' sound before everything resumes to normal. I did chkdsk but it didn't report any problems.
It is also somewhat inconsistent. I have dual boot on laptop and didn't experience any problems on 32bit Win7 (although I only used it for a short while after the incident before I switched to 8 again). Also when I refreshed Win8, I didn't have problems until I installed Catalyst and switched on Radeon.
I have no idea what is causing it.
I ran the game again to see if it happens and it didn't freeze. However when I browse internet it tends to happen every now and then.
On more thing, sometimes the freeze doesn't block my mouse cursor just the applications. I can even click on another tab but everything is unresponsive.
Is there some software that can help me pinpoint the issue?
Right now I have switched back to Intel HD graphics to see if it will make any difference.
Average storage temp is around 40c
CPU temp is around 50c, it was in 70-80 range when I managed to boot it after shutdown

I have exactly same problem with same laptop G770... ocasionaly screen freeze for xx seconds and then i hear some "tick" inside and then everything become normal. This happen when i surf web or draw or anything, does not depend on the CPU load ... and sometimes i recive error AMD driver stoped working but recovered... i update drivers all the time so that is not the problem...sometimes it happen 10 times in 10 minutes, sometimes a day pass and i dont get any freeze... have this problem for a looong time and it's really annoying.. please try to help us find a solution

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My screen keeps freezing [G770]

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