What is it that you're trying to print? Is it, say, a copy of the web page that you're viewing now or perhaps a Word document? Or are you trying to print an image of your desktop?
If it's the output from a word processing program (such as Microsoft Word or LibreOffice Writer), or something similar (such as a spreadsheet), what happens when you press Ctrl and P together (or go to File > Print, or whatever you usually do)? Do you see the normal printer dialogue? If so, what, if anything, happens when you then click on 'Print'? (If it's nothing at all, check that the printer shown as being selected when you see the printer dialogue box is actually the one that you're using).