Mr816x FW driver problem !!

I have dual boot Windows 7 64bit (SP1) and OSX 10.8.5
When i boot into Mac osx everything just fine.
But then i comeback to Windows 7 and “Failed to initalize” messing up. And i uninstall fw driver and reinstall but it still happen. Only thing working is reinstall Windows (!) while come back to OSX it still working.

Anybody can explain?

Sry about my English