12-29-2019 08:56 PM
Printer is printing random letters, characters and numbers
01-01-2020 02:44 PM
Welcome to HP support community.
Cancel the print job
In Windows, search for and open Control Panel.
Under Hardware and Sound, click View devices and printers.
Double-click the printer icon, and then double-click See What's Printing.
The print queue opens.
Click the print job you want to cancel, and then click Document.
Click Cancel, and then click Yes to confirm the selection.
Download and run HP Print and Scan Doctor
Download and run HP Print and Scan Doctor to automatically identify and resolve the issue.
You can refer this HP document for more assistance:- Click here
I hope that helps.
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