Hi BobCollins,
Welcome to the HP Forums, I hope you enjoy your experience!
I understand you want to know how to get the descreening software.
I will be happy to help you.
You would have to download Third Party Software to be able to use this feature.
You could do a search for Descreening Software Free Download on Google or maybe PCWorld which might provide what you are looking for.
Hope this helps.
Thank you for posting on the HP Forums.
Have a nice day!