Now Canon Printer won't work

[Thomas]

In Control panels, Printers, check the settings of your printer. Either you have it incorrectly setup (to print to a file), or you have some other printer set as default and the system is printing using other printer driver than you are intending to use.
If you installed some driver that you think caused this, you can uninstall it - eg. through Control Panels > System > Hardware > Device Manager.