Hello and thank you for this updated information.
Please make sure this printer is plugged into a direct wall, not a surge protector. This step is mandatory as it could make a difference. Make sure this printer has an up to date Firmware. Please click here to find out and choose your correct operating system.
Make sure the paper size is correct by going through the copy settings:
1) Press Copy on your printer
2) Press "Copy settings"
3) Go into 'Settings"
4) Make sure the Paper Size is on "Letter"
Next, try cleaning the rollers on your printer. Please follow this HP document here to help you perform this step. Again, please post your results.