Which software are you trying to print from?
If, for example, you view a PDF document in a web browser window and then click on File>Print from the browser's menu (or press Ctrl+P) you'll get a blank sheet of paper. (You need to use the separate print option within the actual PDF area). So it's possible that your printer might be working perfectly but you're using the software incorrectly.
If you're confident that it's not a software problem, try running the print head cleaning routine for your printer (using the 'deep clean' option if there is one).