Welcome to the HP Support Community. I understand the tablet is not booting. I'd be happy to assist you.
If you aren't able to get through it after performing a hard reset, disconnecting the power cable and holding the power button for about 30 seconds, then restarting the device, you may need to perform a factory reset to get back into the device:
Here's what you'll need to do:
If your tablet does not start normally, or if you do not remember the lock screen password, it might be necessary to perform a reset without turning on the tablet.
All data saved on your device is deleted when you perform a factory reset. All apps are uninstalled. Data stored in your Google Account can be restored. Back up all important files, either on the Web or with an external storage device, before resetting the tablet.
Use the following steps to begin the factory reset:
Charge the tablet for at least half an hour, and then disconnect the charging cable from the tablet.
If you have a microSD card installed in the tablet, remove the memory card before resetting the tablet.
Select your tablet model from the list below to view instructions for resetting the tablet.
FOR DETAILS & FURTHER INSTRUCTIONS, USE THIS LINK: Click here (Skip to Resetting when the tablet does not start)
Hope this helps! Keep me posted.
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Thanks for the assistance you gave me. I did everything you ask me to do up to rebooting the system, After showing the logo (HP) the screen went into dark mode. i left if more than an hour and a half still thesame dark screen.