Win XP won't show hard drive in My Computer

I have a mybook that i used to back up a bunch of stuff on my macbook. My macbook is no longer working and I’m stuck with my work pc. It’s running Windows XP pro. I’m an admin on the computer. I plug in the hard drive and it makes the sounds like it’s connecting and shows the icon to safely eject the drive, but I can’t get it to show up in my computer. Is there anything I can do to retrieve those files?

I don’t have access to another mac.

The drive does show up under Disck management.

If the drive was formatted for Mac it won’t show up in Windows. Something like MacDrive might work. Sadly I don’t know of any freeware like it.