Your issue may simply be a missing driver. There are three ways to solve this:
- Install the driver from the CD/DVD that came with the hard drive.
- Search the Seagate (the parent company of Maxtor) website for the drivers.
- Go to "Devices and Printers".
-Right-click the unrecognized device
-Click "Properties"
-Click the "Hardware" tab
-Click "Properties"
-(A new window will open) Click "Change Settings".
-Go to the "Driver" tab
-Click "Update Driver"
-(A new window will open) Click "Browse my computer for driver software".
-Click "Let me pick from a list of device drivers on my computer".
-Make sure the "Show compatible hardware" box is unchecked.
-Pick a driver that is similar in functionality to the hard drive.
*Note that this method is not guaranteed to work.
Try doing 1 and 2 first; if they fail, move to 3. Good luck!