500 gb my passport PLZ HELP

Aug 17HELLO I AM IN A PANIC AS MY HARD DRIVE DOES NOT SEEM TO READ ON MY DESKTOP OR LAPTOP. IT READ ON MY VIZIO TV . ONCE I CONNECT IT TO THE COMPUTERS I HEAR THE LOADING OF THE HARD DRIVE BUT NOTHING EVER COMES UP . CAN SOME ONE PLEASE TELL ME WHAT I CAN DO TO JUST GET THE INFORMATION FROM THE HARD DRIVE AND TRANSFER IT TO MY COMPUTER?  I DO NOT WANT TO LOSE WHAT I HAVE INSIDE

Hello.

Make sure you connect the unit to the back usb ports of your computer and check on disk management to see how is the drive showing.

Check the link below for additional information.

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

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