Update your graphics driver.
Take a memory test.
Run for 8 passes.
Then test each stick in a good slot for 6 passes.
If you have dual channel, the results may be incorrect, if shows pass. Guide to using Memtest86+ - Geeks to Go Forums
My Computer
At a glance
Windows 10, Home Clean InstallIntel Core2 processsor Q8200(2.33Ghz 1333FSB)...6 gbATI Radeon 256MB HD3650