Cary L. Brown wrote:
Any chance you've changed the hard drive mode? That would be the first thing I'd check. You want it to be seen as a media device, not a hard drive.
If that doesn't prove out, there's always hardware... cable, ports, etc... and finally, sometimes Windows' USB registry data for a particular device will show up wrong... for example, it may show up in Device Manager as "unknown device."
What he said. Also, check your McAffee quarantine for any files quarantined around the time it stopped working (based on your other message). It's possible it falsely detected a file which was necessary to allow WMP's sync function.