Help me please

Hi I’m Kennedy Sousa from Brazil and wanted to ask your help because my external hd western digital 500gb my passpprt is not being recognized by windows 7.
I wonder how do I get windows 7 to recognize my external hd


Is the drive showing within disk management?

How to access Disk Management in Windows XP, Vista, 7 or 8 to manage hard drives

Please see the following link as this will allow you to test the unit.

How to test a drive for problems using Data Lifeguard Diagnostics for Windows