Just guessing, but check the printer setting page and see if there is reference to what paper you're using. If you can see if a "custom" or select a similar size but more generic. Any other setting that may include the blank or white tab, in other words play with it. I can only suppose that the defaults when setting up the printer provide an automatic reference to the HP line of products. If none of this works, be sure to check the pgms. as well to see that as well in MS Picture/Fax.

tada -----Willy Happy