I do not know where to post this thread so i will put it here, place it elsewhere if needed

I recently bought several computers from a public school because they were updating their equipment. i would like to know if there is a way to completely remove novell from the computer?

I do not know any of the usernames or passwords that are connected to the computer but i would like to use the computers as just computers without all of the novell restrictions and problems.

Can anyone please help me with this issue?