I found an HPdc7900 sff on a curb. It has a windows vista sticker, but when booting it is ubuntu.
I have been able to reset the passwords to the accounts, but when I log in I get this

I know practically nothing about ubuntu/linux, but is it supposed to look like this? Or am I supposed to get a desktop like I do on my windows machine? If so, how do I get there

I don't know if it was an office computer so I don't know if it has a bunch of restrictions