Why won't it print
I used to work for ICL on a support Helldesk for a large company that put windows on every PC
I remember a user phoning up complaining that their printer wasn't working, the paper went through but her document never appeared on the paper.
Ink status showed fine, a test page would work but it was difficult to read.
After spending an hour on the phone with her I gave up and asked her to email the document in, which she did.
When I looked at the document she'd changed the text to white.
When I phoned her back to tell her this she explained that she was using green paper so it should work ok....