Digital Photo Printer

‘Card/Digital’

I have been using my gateway digital camera with the sd card and using my mom’s HP Photo Printer to print the photos. I got an error on the printer that says “cannot display this photo”, I also put the card in my camera and it will say “card error”. I have tried taking it to Walmart and other stores and it won’t display about 4 of the pics that I know are on there. There are pics taken before and after those not showing up and those appear fine. What should I do, should I try cleaning the card and if so, how? Is there anywhere I can take it or anything online to do for the card? I never seemed to have this problem till I started using her printer. Before it would happen once in a while but I could always retreive the photo by taking to Walmart. I can’t even get them to download to my computer. Maybe I should get a camera/printer bundle that is together and maybe that would work better. I have even deleted some pics off the card hoping that would make the others appear and nothing.