The Paper light keeps flashing when theres paper in the printer
A few things could be happening here.
1. Clear the print queue, and if there are jobs that won't delete, reboot the computer.
2. Now clear the jobs on the printer (cancel job button) until the status light turns green.
3. Put a piece of paper in the manual feed tray on the front.
4. Print a test page.
If the test page prints to the paper in the manual feed tray, then it is set as the default tray. Go into the printer settings and change it to "auto" or tray 1. If the test page prints to tray 1, but the original document you tried to print (when it got stuck) still won't print, cancel the job. Now, again, put paper in the manual feed tray. Try to print the document again and if it pulls from there, go into page setup of your document and change the setting from "manual" to "auto" or tray 1. Clear the job again (if it's stuck) and you should be able to print again. Hope this helps. This is one of the most common solutions - it happens a lot, especially with documents that are emailed from other people and once they get stuck in the queue, nothing will print (except the test pages directly from the printer, like you describe).