When I cut it on it says boot device not found please install and operating system on your hard disk

[oracwilson1969]

I have an HP and it says boot device not found please install an operating system on your hard disk hard disk 3fo and then F2 system done Diagnostic and then it says more information y'all's address on it and all I did was just turn it on and it said that and it's an HP fairly new with Windows 11

[Garp_senchau]

@oracwilson1969,  Welcome to HP Support Community,

Thank you for posting your query; I’m here to help by guiding you through steps to resolve this issue

If the Hard Disk Error 3F0 boot device not found is displayed on a black screen, use the following procedures to try to resolve the error.

Restore BIOS default settings

To restore the BIOS default setting, open the BIOS Setup screen.

1. Turn off the computer and wait five seconds.
2. Press the power button to start the computer and repeatedly press the f10 key to enter the BIOS setup menu.
3. On the BIOS Setup screen, press f9 to select and load the BIOS Setup Default settings.
4. Press f10 to Save and Exit.
5. Use the arrow keys to select Yes, and then press Enter when asked Exit Saving Changes?
6. Follow the prompts to restart your computer.

Refer this guide for further troubleshooting steps: HP PCs - Hard disk 3F0 boot device not found error | HP® Support

I hope this helps.

Please feel free to reply here if you have any questions or if you need further clarification on any of the steps. 

Take care and have a good day. 

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Regards,