How do I fix it

[TEETEE71]

Says boot device not found, Please install an operating system on your hard drive. Hard disk (3F0) are the words on the scree

[praveen196]

@TEETEE71 Welcome to HP Community!

I understand that you are getting a boot device not found (3F0) error.

Please provide the correct product number.

Note: Please ensure the complete product name/number for a quicker response from the community, as we need to know what we are dealing with to provide an accurate solution: 

Click here for steps on finding the information we need!

Remember: Do not share any of your personal information such as serial, phone number, email ID, etc.

http://support.hp.com/us-en/document/c03754824

In the meantime, perform the hard drive test and check.

1) Shutdown the computer.  

2) Turn the computer back on again and repeatedly tap on the ESC until a Startup menu appears.  

3) Press F2 once.  

4) Go to the Component test.  

5) From the list, run the Hard Drive (extensive) test.  

Please refer to the below link to troubleshoot the issue.

https://support.hp.com/in-en/document/c01443463

Keep us posted,

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Give us a virtual high-five by clicking the 'Thumbs Up' icon below, followed by clicking on the "Accept as solution" on this post, 

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