hp deskjet 5150

You mean http://localhost:631/ ?

I have this but don't know where to start.

Is there some option to try and print a test page?
Yes. There should be a Manage Printers under the Administration tab, or an entire Printers tab, wherein you can delete the existing one (which we assume is not configured correctly), and then there should be an add printer button that gives you an add-printer wizard to re-add the new one. Once you have that configured, you should be able to view the printer and print a test page.
 
Back
Top