Scanner only scans partial image, please help!

scanner not working right (HP all in one printer), when I scan from the HP device I get partial images saved into "scanner output", when I scan from the computer I get a full image with a decreased viewing field that I need to resize. Now, scanning from the computer it opens a window to save in "scanner output" which I do, the device scans, I see the image, but when I clear that box there are zero saved projects in "scanner output". I am so frustrated. I even lock the 8.5"x11" in the resize field but images/viewing fields are still partial. HELP! Any advice would be greatly appreciated.