O conselho sobre este site me salvou mais de uma vez:
Pull up your Run box (Windows Key+R) type in cmd and hit Enter. This will bring you to the MS DOS prompt. There type in the following:
net stop spooler
You should get a message saying the spooler stopped successfully. Now we need to clean out the spool folder. This is where windows keeps jobs that haven’t been printed yet.
Call up your Run box again (Windows Key+R) and type in the following:
%SYSTEMROOT%\system32\spool\PRINTERS
This should open a new explorer window. You are likely to see bunch of files in there – some of which may be classified as “Shockwave Objects” by windows. They are actually not Shockwave files but whatever. We don’t care because we will be deleting them. Just remove everything you can see that folder and then close the window. If you can’t delete some of the files, it means that you didn’t stop the spooler properly. Go back and try it again.
This deletes all the jobs on the queue, so you might need to re-send some of the documents that got stuck there waiting. Once the folder is empty go back to your DOS prompt and type in:
net start spooler
Your printer queue should be clean now. If it’s not, you probably did something wrong.