When having this problem you may receive the following error "Spooler subsystem app has encountered a problem and needs to close." when  restarting your machine, starting the print service or even going to your printers and faxes screen.  The most annoying time is when you want to Add or Remove a printer!  It sometimes happens that you're trying to print to a network printer and the Windows test page works but no other documents print!

The Problem?
My HP printer warms up when I print a doc but never actually prints anything!  When trying to remove it, it won't go away and it doesn't want to reinstall or repair drivers either.

The Fix
Click on Start, go to Control Panel and select Programs and Features (this is written for Vista users).  you can also just paste "Control Panel\Programs and Features" in your browser.  Select and click on "Turn Windows Features On or Off" which is down the left in the green pane.  If you are using User access control approve it.  In the box that appears find "Print Services".  Turn OFF "Internet printing client" and turn ON LPD and LPR.  Click Ok.  Windows will reconfigure itself and will prompt you to restart.  After restarting you should be able to do what you wanted to do without problem.