On turning on the computer, the following message is coming...selected boot image did not authentic.

[SR_97]

Model11-ab019TU .On turning the computer on, the following message is coming on the screen...Selected boot image did not authenticate.Press <Enter > to continue.

When I press <Enter > the screen and the computer is turning off.

what is the problem? Can it be rectified?

[Echo_Lake]

@SR_97
Thank you for posting on the HP Support Community.

Don't worry as I'll be glad to help, however, to provide an accurate resolution, I need a few more details:

• Did this happen after a recent window or software update?
• Have you made any hardware/software changes?

While you respond to that, let's try these steps:

Firstly, perform Windows Update and HP Support Assistant: (do not skip any troubleshooting steps if you feel steps are repeating) 

To check for updates now, select the Start button, and then go to Settings  > Update & security  > Windows Update, and select Check for updates.

Install updates from HP Support Assistant: Go to Download HP Support Assistant to install the tool.

1. To open HP Support Assistant, double-click the HP Support Assistant icon .
2. Click My devices in the top menu, and then click Updates in the My PC or My notebook pane.
3. Click Check for updates and messages to scan for new updates.
4. Review the list of updates. Updates with a yellow information icon are recommended. Updates with a blue information icon are optional.
5. Click the update name for a description, version number, and file size.
6. Select the box next to any updates you want to install, and then click Download and install.

And, also run BIOS Update: Follow steps from the link: https://support.hp.com/in-en/document/c00042629

If the issue persists, follow the next steps.
Tap away at the ESC key as soon as you press the power button to enter the Start-up Menu and then select the Bios Menu ( f10 ).

• Under the System Configuration tab, expand the Boot Options Menu.
• Set Secure Boot to Disabled and Legacy Devices to Enabled.
• When done, press f10 and select to save the changes.

You may then have to enter a 4 digit pin displayed on the screen to confirm the setting changes - enter the code and hit enter.
 

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.