No bootable device

[Stice_Music]

When I turned on my computer it went to a black screen stating, No bootable device -- insert boot disk and press any key. I do not have a boot disk and am not sure what to do next.

[Riddle_Decipher]

@Stice_Music

Welcome to HP Forums, 

This is a great place to get support, find answers and tips, 

Thank you for posting your query, I'll be more than glad to help you out!

As I understand you have the error message - "boot device not found or no bootable device",

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

Did you attempt to reseat the hard drive as it isn't detected on your F2 diagnostics?

While you respond to that, Please follow the below steps to identify and resolve this concern:

Step 1: Perform a hard reset

HP Notebook PCs - Performing a Hard Reset or Forced Reset

Step 2: Restore BIOS default settings

Step 3: Test the hard drive using HP PC Hardware Diagnostics UEFI (In your case, Skip to Step 4)

Step 4: Re-seat the hard drive (here's a video that shows how to re-seat the drive: Click here) > 3F0 error represent a hardware malfunction, a reseat should help, if it doesn't, please Contact HP as the next step will not help.

Step 5: Perform an HP System Recovery

If none of the above actions resolved the error condition, back up your personal data and then perform an HP System Recovery on the notebook. See one of the following documents for instructions:

Click here for instructions.

If the issue persists, it's most likely a hardware connection failure and you will need to contact the HP phone support for a hardware service

HP Support can be reached by clicking on the following link: https://hp.care/2r9wSvP

(1) Once the support page opens please select the country in which you're located. Next, enter your HP model number on the right.

(2) Next, choose the 'Contact Support' tab at the top and scroll down to the bottom of the 'HP Support- Contact' page to fill out the form provided with your contact information.

(3) Once completed click the 'Show Options' icon on the bottom right.

(4) Lastly, scroll down to the bottom of the page and select 'Get the phone number.' A case number and phone number will now populate for you.

They will be happy to assist you immediately. 

If the unit is under warranty repair services under the manufacturer's warranty will be free of charge.

Keep me posted,

If the information I've provided was helpful, 

give us some reinforcement by clicking the solution and kudos buttons, 

that'll help us and others see that we've got the answers!

Good Luck.