Using Windows 7 on my 3 year old homebuilt system. My 2 year old Logitech gaming mouse suddenly stopped functioning. Upon bootup, the mouse works for about 20 seconds, then the device driver disables it and lists it in the USB list as "unknown device". It works on my other computer just fine, so I don't think the issue is with the mouse itself. The USB port also works fine for other devices, so I don't think it's the port. I think it's a software issue.
Why is the device manager doing this, and how do I enable it?