@Diosmio
Thank you for posting on HP Support Community.
Don't worry as I'll be glad to help,
To get the answer to this question, it's not possible to power on the laptop using Keyboard, Mouse or any other accessories.
Only by pushing the power button, you can turn on the laptop however, you can close the display lid after the signing up process is completed to continue using the laptop with the display lid closed.
- In Windows, click Start and type into the search field, "Change what closing the lid does".
And, also refer to the link: https://support.hp.com/in-en/document/ish_3046046-2885219-16 Enabling the keyboard to wake the computer.
Hope this helps! Keep me posted for further assistance.
Please click “Accept as Solution” if you feel my post solved your issue, it will help others find the solution.
ECHO_LAKE
I am an HP Employee