My HP OfficeJet Pro 8720 has blinking lights and a solid white display

[SamSud]

Did  not work. downloaded the latest version of HP Print and Scan Doctor, ran it. It said that it found issues and fixed it, but the issue still is not resolved. Please advise.

[sandytechy20]

@SamSud

Welcome to the HP support community.

Are you getting any error messages?

Meanwhile:-

Perform a power reset

1. Turn on the printer, if it is not already on.
2. Wait until the printer is idle and silent before you continue.
3. With the printer turned on, disconnect the power cord from the rear of the printer.
4. Wait at least 30 seconds.
5. Plug back the power cable straight to a wall outlet and printer without any surge protector.
6. Turn on the printer.

Update the printer firmware 

Here are the steps:- Click here

Let me know how it goes.

To thank me for my efforts to help you, please mark my post as an accepted solution so that it benefits several others.

Cheers.  

[SamSud]

The solutions you provided did not work.

[sandytechy20]

@SamSud

This seems to be a hardware issue.

I request you to talk to HP support.

They might have multiple options to help you with this.

1. Click on this link - https://support.hp.com/us-en/contact-hp?openCLC=true
2. Select the country.
3. Enter the serial of your device.
4. Select the country from the drop-down.
5. Click on "Show Options".
6. Fill the web-form. A case number and phone number will now populate for you.

Let me know how it goes.

To thank me for my efforts to help you, please mark my post as an accepted solution so that it benefits several others.

Cheers.

[SamSud]

It turns out that this is not a hardware issue. I turned my Internet router off waited for 60 seconds and turned it back on and the problem went awaY