Can’t download anything.

So I got a dell optiplex CX110 from my teacher this year. It works alright, yet I can’t download anything.. The computer is running on windows 2000. It is one of those school computers.

It seems the computer is running on some kind of school system that disallows a student account from downloading anything. (When I try to download something it says Error 1925 and that I don’t have admin privileges)

I told my teacher about this, so she tried giving me the admin account info, but it isn’t correct.

If there’s any info that is needed, please ask!
Thank you! 🙂