Windows 7 does not recognise my hard drive

WD External Drives WD Portable Drives
4

Yes i have tired it on an old windows xp machine with no luck.

I disconnected and reboted it several times.

I updated the firmware to the latest version.

The drive registers on my media player, so it works.

I even unplugeed the device and ran in from another power point.

I cant get my money back for this drive.

It worked for about 2 weeks then just no longer works.