Help USB connection problem to Windows7

[G-droid]

My Incredible was connected ok via USB cable to my computer running Windows 7 x64.
A day ago it started acting up, it says "the disc is not formatted"
I have disconnected it then, it says "device is not recognized"

It is strange, but it connects ok to another PC.

I have searched, but could not find a solution.
Please, help!

 

[sdrawkcab25]

Drivers might be corrupt, try un-installing the drivers and re-installing them again.