Access Denied when trying to import pictures from camera and/or card

Recently when I try to import pictures from my camera (Nikon D5000), it tells me there are errors and image can not be transfered. Then, at the end of the attempt, it says access denied. I’ve tried multiple SD cards, same thing. I am able to browse the images, but can not import then to my computer (Windows 7)…Could this be a computer setting or the camera?