System Diagnostics

[LHoward]

I have a HP laptop and I’m just now cutting it on and it saying Boot Device Not Found and please install an operating system on your hard disk. Hard Disk - (3FO) and F2 System Diagnostics. 
It said for me to come to this website to get help.

Can you please help me?

[Garp_senchau]

@LHoward, Welcome to HP Support Community,

Thank you for posting your query regarding 3F0 Boot error; I’m here to help by guiding you through steps to resolve this issue

First perform a power drain:

Turn off the computer.

Disconnect the AC adapter.

Remove any discs from the disc drive.

Remove memory cards from the card reader slot.

Disconnect all nonessential peripheral devices, such as printers, scanners, external hard drives, and USB flash drives.

With the AC adapter unplugged, press and hold the power button for approximately 15 seconds.

Reconnect the AC adapter, and then turn on the computer.

Next, I suggest you refer to this guide for further troubleshooting steps: HP PCs - Hard disk 3F0 boot device not found error | HP® Support

I hope these steps help resolve the issue

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,