|Look at your manual (online) to see that you have checked all of the places that paper could have been jammed. It is possible that if the jammed piece tore when removing it, you might have a piece left behind.|
Once (or if) you are sure that all of the paper pieces are removed, unplug the printer, wait for almost a minute, and plug it in again. This will make the printer 'forget' about the jam and make the printer check the alignment of all printing components. The print a test page or follow print head alignment procedure and then print a test page.
You have to be a little bit crazy to keep you from going insane.