PC Hangs while gaming

ahmedkhalifa1999

Distinguished
Feb 14, 2014
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This started from two weeks, My PC always stops when I play any game and then continues after 5 seconds but the number of hangs differs from game to game (e.g. in Watch Dogs, it occurs about every 5-10 minutes but in Need For Speed : Most Wanted, it occurs just 1-2 times per hour)

My system :
Intel Core2duo @ 3.33GHz and 1.2875V(stock)
2x2GB 1333MHz Kingston ram @ 1200MHz and default timings
MSI GT640 N640-2GD3/V3 @ 1080MHz Core, 900MHz Memory and 1.1V
WD Caviar Blue HDD
Windows 7 64-bit
500W non-branded PSU
and I have the latest Nvidia drivers

Note : I used to play Need For Speed : Most Wanted from 6 months with no problems at all but on a different OS and of course different drivers and also a higher overclock