Admin PC is denying access

I first attached a MY Passport ED to a laptop running Windows Vista and backed-up the files. I then attached the same drive to a new laptop running Windows 8. I can see the old files but they won’t open. I get a message saying "contact the owner of the media server to allow your PC to access it. I have no idea how to proceed and would appreciate any help I can get.

Try doing a search for Take Ownership. Windows permissions can be a real pain since Vista.

Joe