Welcome to HP Support Forums!
I see from your post that you're having issues with the printer stuck on initializing screen. Don't worry we'll work together to help you find a solution.
To provide you with an accurate solution, I'll need a few more details:
Have you recently made any changes on the printer before the issue started?
How is the printer connected? USB/Wireless
Have you tried to perform an update on the printer?
In the meantime, let's try these steps here:
Let's start off by updating the printer firmware. If your printer connected wirelessly, make sure to temporary connect the device with USB and then follow the link to install the latest firmware update on your printer from our HP support website, using this link. Once done, restart the printer. For more details on how to update, please use this link: HP Printers - Updating or Upgrading Printer Firmware
If the issue persists, I would suggest here is to do a hard reset on the printer and make sure that the printer is connected directly to the wall outlet and not to the surge protector.
With the printer turned on, disconnect the power cord from the rear of the printer and also unplug the power cord from the wall outlet.
Remove USB cable, if present.
Wait for 2-3 minutes, press and hold the power button on your printer for about 30 seconds to remove any additional charge.
Now plug back the power cable straight to a wall outlet without any surge protector or an extension cord and then plug back the power cord to the printer.
Turn on the printer and wait till warm-up period finishes and the printer is idle.
Please let me know if this resolves the issue, or if you require further assistance!
Eagerly waiting for your response!
that said, If the information I've provided was helpful,
give us some reinforcement by clicking the solution and kudos buttons,
that'll help us and others see that we've got the answers!
Good Luck.
