Buttons not working on HP 4645

Hey, i bought a 4645 printer one month ago,
i used it only a couple of times,
now the buttons on the left of the screen are not working
buttons are:
1-Home
2-Back
3-Cancel
although all the other buttons are working
help please
Thanks

Hi Umry,
Welcome to the HP Forums!
I see that your buttons on the left of the screen are not working with your HP Deskjet Ink Advantage 4645. I am happy to help you with this issue!
Please take a look through this guide. The HP Printer Won't Turn On or Respond When the Power Button is Pressed.
If that does not fix the issue, please call our technical support at 800-474-6836. If you live outside the US/Canada Region, please click the link below to get the support number for your region. Country-language selector.
Hope this information helps, and have a great day!
RnRMusicMan
I work on behalf of HP
Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
Click the “Kudos Thumbs Up" to say “Thanks” for helping!

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