well that's not a lot of info, but it sounds kind of like a video card memory problem to me.
My Computer
At a glance
Windows 7 x64 / Windows Server 2008 / Linux (...AMD FX 8150 Eight-Core Processor 4.23 Ghz OCG.SKILL Ripjaws X Series 32GB (4 x 8GB) DDR3 ...2X Radeon HD 4870 CrossFire X
Computer type
PC/Desktop
Computer Manufacturer/Model Number
Pandora (computer name)
OS
Windows 7 x64 / Windows Server 2008 / Linux (Redhat & Deb distros) / OS X / More
CPU
AMD FX 8150 Eight-Core Processor 4.23 Ghz OC
Motherboard
ASUS SaberTooth 990FX
Memory
G.SKILL Ripjaws X Series 32GB (4 x 8GB) DDR3 SDRAM 1333