
First, look for updated drivers from the NVidia site. If you just bought the computer pre-built, chances are it's behind by a few months.
Second, make sure it has good air flow and that the fans on the graphics card are spinning (and that air is coming out the exhaust vents). After bad drivers, the next leading cause of graphical glitches is an overheating GPU. They are more temperature sensitive than your CPU is.
Second, make sure it has good air flow and that the fans on the graphics card are spinning (and that air is coming out the exhaust vents). After bad drivers, the next leading cause of graphical glitches is an overheating GPU. They are more temperature sensitive than your CPU is.