Is this a copier/printer? If it is, attempt to make a copy of something without using your computer. If it prints, then its not the printer. If it doesn't, unplug and replug into wall outlet and retry printing.
Also make sure that all of your cables are connected (to the computer of coarse).
At this point, it would be the print spooler. Reinstall the printer software on your computer and retry printing.
This should do the trick.