I am using Windows 7 RTM x64.
From Control Panel > Devices and Printers, I have three printers listed; Fax, XPS Writer, and a Lexmark.
I can print a test page through the printer properties with no problem.
I can print a text file from Notepad with no problem.
I can't print from Safari. When I press Ctrl+P, it displays the Print dialog, press OK and nothing happened.
I can't print from Adobe Reader. When I press Ctrl+P, it complains that it there is no printer installed.
I can't print from Office applications. When I press Ctrl+P, it crashes immediately. Running Office Diagnostics does not help.
I can't print from IE8. When I press Ctrl+P, it displays the Print dialog, complains that I have to select a printer from the list, selected any of the three printers, the Print button is disabled.
The default printer is the Lexmark. I'm testing on this one as well. I was about to reinstall Office (as this is the first application that has the problem), but then I tried other, some behave similarly but not identical (maybe caused by different printing implementation). On those applications that is able to display printer selection dialog, I tried the Lexmark and XPS. Neither printed anything (paper for Lexmark, file for XPS).
It seems that my Windows installation is botched. A colleague have similar hardware/software combination (it's the same workstation model and Windows 7 x64) and his can print perfectly fine. I tried adding the printer from his share, no joy. I can test print from the printer property, I can print from Notepad, but not from any other application.