I have an HP C4200 Printer-scanner-copier and when it tries to pull the paper in to print it says ''paper jam''. There is no paper in there that I can see.

1. Please visit the below web link
http://h10025.www1.hp.com/ewfrf/wc/softwareCategory?product=3300218&lc=en&cc=us&dlc=en&lang=en&cc=us
2. select operating system
3. Downloa printing diagnostic utility
4. Run it and diagonize
5. Fix it and restart
If the issue still persists, then

Perform a reset of the HP All-in-One

1. Press the On button and turn off the HP All-in-One.
2. Unplug the power cord from the wall outlet.
3. Unplug the power cord from the back of the HP All-in-One.
4. Wait for 20 seconds.
5. Plug the power cord back into the HP All-in-One.
6. Plug the power cord into the wall outlet.
7. if the issue still persists, then perform the below steps it should resolve your issue.
8. 1.Power Button + Cancel Button Combo
   2.Enter special key combo 1[Scan] 3[Copy Color] 2[Copy Black]
   3.‘Support menu’ will be displayed
   4.Press the 2[Copy Black] until the display shows ‘Reset Menu’
   5.Press the 3[Copy Color] once
   6.Press the 2[Copy Black] until the display shows ‘Semi full reset’
   
   7. Press the 3[Copy Color] once
   8.The printer will go off and will power on by itself, else wait for 20 seconds and power on the Printer
9. Turn on the HP All-in-One by pressing the On button.

Alternative driver download link: HP Photosmart C4250 All-in-One Printer Driver