Support

[Tariq5]

Boot device not found 

Please install an operating system on your hard disk,  hard disk (3FO) 

[IT_WinSec]

Hello @Tariq5 

Welcome to the HP Support Communities.

Reason/Root cause >> You get this 3F0  message because either of these:

-  Computer's BIOS is not configured correctly and it tries to boot from a device (not standard HDD) that has no bootable stuff on it

-  there is no disk drive/storage drive present in the PC

-  HDD/SSD is present but corrupted (or some connector is not working)

-  Operating system (e.g. Windows) is totally corrupt/unbootable

You can review the official HP article about such issues > http://support.hp.com/us-en/document/c01443463

Tell me if you have performed any changes before the issue started, provide some update.

* Please, perform some basic hardware checks

1. Please, shutdown the computer using the power button

2. Power it on.

2.1 As soon as you press the power-on button, immediately begin hitting the Esc button (like tap-tap-tap).

This should open a HP Startup Menu >> https://www.youtube.com/watch?v=GSN0qzXayUY

3. Choose F2 to open System Diagnostics (or the respective F option to run diagnostics).

Follow the on-screen instructions to perform System Test >> Fast test.

https://www.youtube.com/watch?v=6JXUp43ahHA

If there are no system checks/no quick tests, perform HDD (hard disk drive) and RAM (memory) check.

Let me know the test results.

* Reset BIOS/UEFI settings to default... Repeat steps above but when HP Startup menu opens, please choose F10 to open BIOS setup.

Navigate through the BIOS and find the option to load default settings/configuration/reset BIOS settings to default.

Save the changes.

Exit the BIOS saving the changes.

Let me know how it goes.