Windows 7: Sea gate 2tb will not let me open any files permission problems

This is my tb that I plugged into a friends work computer I shared some files with him after he left the job I received his computer I plug in my tb and it says I'm locked out that his login is the only person who has permission to access it but his login is gone so I can't login with his account and change nothing was password protected on it before. All my work documents are locked on this thing it won't let me add my login name and I don't have admin on this computer I'm hosed if I can't unlock it please help I have 2 packages that have to be turned in next week.please help oh I am not very computer savvy so please feel free to use little words thank you.

Your friend has probably put a password in. Just ask your friend for the password.

our login names are password protected but i cant find any place where you can put in a password. any other suggestions

sounds like the IT department puts removable media protection on the work machines and activated it when your friend left the company - contact them and ask