Boot device not found HP Spectrex360

[ApostolosK]

Hello,

I am getting an error message "Boot device not found" when I am trying to turn on my laptop. This message appears sometimes (most of the times), but not always. Moreover, I sometimes get a blue screen error during laptop operation in cases that the PC was able to boot successfully.
I tried steps 1 to 3 from this website "https://support.hp.com/rs-en/document/c01443463" but nothing worked. During the diagnostics step I was getting an error that hard-drive is not connected.

Can you please let me know how to proceed? 
Thank you.

[sandytechy20 · Accepted solution]

@ApostolosK

Welcome to HP support community.

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 generic 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 or you aren't comfortable, 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.

FOR DETAILS & FURTHER INSTRUCTIONS, USE THIS LINK: CLICK HERE

(By the end of this article all the issues should be resolved)

I hope that helps.

To thank me for my efforts to help you, please mark my post as an accepted solution so that it benefits several others.

Cheers.

[ApostolosK]

Thank you for your reply.

It seems that Step 4 solved the problem. I haven't seen the issue for nearly a week now.

[sandytechy20]

@ApostolosK

Good to know that issue is resolved.

Feel free to contact us in the future if you need any assistance.

Cheers.