Hi @anthia1 ,
We apologize for the inconvenience, but it seems that the issue needs a hardware repair.
Unfortunately, there are no further actions we can take through this channel. I recommend reaching out to our phone support for further assistance.
They can help you with the unit repair or part replacement.
I request you talk to HP Phone Support and they will help you to sort it out as it requires advance support or repair.
1. Click on this link - https://support.hp.com/us-en
2. Select the country.
3. Enter the serial number of your device.
4. Select the country from the drop-down.
5. Click on "Show Options".
6. Fill out the web form. A case number and phone number will now populate for you.
Please feel free to contact us here anytime you need any further assistance.
Have a great day!
Rachel571
HP Support