I think Seti is right here. Sounds like it has come to the end of its life.
Only reason I think it works in Linux is because Linux isn't as strict as Windows.
OS: Windows 7 64-bit Case: Commander MS-I
Mother Board: GA-880GM-UD2H CPU: AMD PhenomII X4 965 3.4GHz(Stock) RAM: 16GB GPU: GeForce GTX 550 Ti