My games crashes at random fairly often

So i will be playing at 60 fps no lag nothing, and then randomly my game will crash. and it does this about once an hour. As you can imagine this could get very frustrating.

My System Specifications

Operating System:
Windows 2.6.1.7601 (Service Pack 1)
CPU Type:
AMD FX(tm)-6100 Six-Core Processor
CPU Speed:
3.33 GHz
System Memory:
8.49 GB
Video Card Model:
NVIDIA GeForce GTX 650 Ti
Video Card Memory:
4.23 GB
Video Card Driver:
nvd3dum.dll
Desktop Resolution:
1360x768
Hard Disk Size:
2 TB
Hard Disk Free Space:
1.55 TB (78%)
Download Speed:
1.8 MB/s (14.4 mbps)

if anyone could help that would be great