I had this problem once before. It happened when I was prompted to update the drivers. When I did that nothing printed afterwards and I had to reinstall the drivers. I'm using a Dell Dimension XPS 410 with a Vista operating system.
After reinstalling the software, I noticed a second instance of it in control panel under printers. It is checked as default as it was when I was able to print before I tried to upgrade. I made it the default printer and it worked.
Now, after updating the software, nothing prints. When I go to device manager, everything is said to be working properly. When I right click on the queue, and go to properties I see two documents I want to print. When I right click on restart, nothing happens. There are no ink problems with the cartridges and the printer control panel is on. There is no connection issue noted and the system is a local printer that isn't on a network.
I'm sure it's something simple but it escapes me.