you need to check the margins that are set up in print settings. If your printer is capable of it you would also need to set it to borderless printing. Whether it will accept that may also depend on whether it is set to print to photo paper that can handle borderless printing as well. some printers are picky about having the correct paper type selected as well.
I can get you my phone number and log in remotely to show you how to do it right on your computer if you want to pay a little bit extra.