Please try the following to see if they help.
https://h30434.www3.hp.com/t5/Notebook-Boot-and-Lockup/HP-Chromebook-14-Not-Booting-Up-At-All/td-p/8729576[br]
https://support.hp.com/us-en/document/c00476202 [br]
https://support.hp.com/us-en/help/computer/power-boot-issues
Please try the following to see if they help.
https://h30434.www3.hp.com/t5/Notebook-Boot-and-Lockup/HP-Chromebook-14-Not-Booting-Up-At-All/td-p/8729576[br]
https://support.hp.com/us-en/document/c00476202 [br]
https://support.hp.com/us-en/help/computer/power-boot-issues
Please try the following to see if they help.
https://h30434.www3.hp.com/t5/Notebook-Boot-and-Lockup/HP-Chromebook-14-Not-Booting-Up-At-All/td-p/8729576[br]
https://support.hp.com/us-en/document/c00476202 [br]
https://support.hp.com/us-en/help/computer/power-boot-issues