HP Photosmart 7838 Printer Jams & feed problems
Adjust the paper settings in the print driver. The paper settings in the print driver must match the paper settings for at least one of the installed paper trays.
=>Open a document in the application in which it was created.
=>Click File.
=>Click Print.
=>Click Properties. The Printer Properties dialog box displays.
=>Click the Paper/Quality tab.
=>In the Size is drop-down menu, select the size of the paper loaded in the unit.
=>In the Type is drop-down menu, select the type of paper loaded in the unit.
Click OK.
NOTE: These changes do not change the default print settings. The print settings will revert to the default print settings the next time the application is opened
does the problem occur @ your frnd's PC too?