No boot device found (pc does not work)

[Giovanni_Mang1]

ALmost all the diagnostics tests seem good, but I got this error:

I have to solve as soon as possible since I have three deadlines by tomorrow evening. Thank you

[Hawks_Eye]

Hi @Giovanni_Mang1 

Welcome to the HP Support Community! We're here to help you get back up and running.

Thank you for explaining the situation so clearly—I'm really sorry you're facing this, especially with such urgent deadlines ahead. The “Boot Device Not Found – Hard Disk (3F0)” error means your system isn’t detecting the drive that holds Windows, even though diagnostics show most components are working. That’s a strong sign the issue may be with the boot configuration or drive initialization, not necessarily a hardware failure.

Let’s walk through a focused recovery process to help you get back up and running as quickly as possible:

 

Step-by-Step Recovery for “Boot Device Not Found” (3F0)

1. Check BIOS for Drive Detection

• Power on the laptop and immediately press Esc, then F10 to enter BIOS Setup.
• Navigate to Storage > Device Configuration.
• Look for your internal SSD or HDD listed there.

If the drive is listed, it’s physically connected. If it’s missing, the issue may be with the connector or power delivery to the drive.

 

2. Reset BIOS to Defaults

• In BIOS, press F9 to load default settings.
• Press F10 to save and exit.
• Try booting again.

This clears any misconfigured boot paths or legacy mode conflicts.

 

3. Run HP UEFI Diagnostics Again

• Restart and press Esc, then F2 to enter diagnostics.
• Run the Storage Test and System Test.
• If the storage test passes, the drive is likely functional but the bootloader may be corrupted.

 

4. Use Windows Recovery USB

If the drive is detected but won’t boot:

• Use another PC to create a Windows 11 recovery USB:
  • Download Windows 11 Recovery Tool
• Plug it into your HP Envy x360.
• Power on and press Esc, then F9 to select boot device.
• Choose the USB drive.
• Select Repair your computer > Troubleshoot > Startup Repair.

If Startup Repair doesn’t work, you may need to reinstall Windows—but this step can often restore the bootloader without data loss.

 

5. Check for Firmware Updates

• Visit the official HP support page for your model:
  HP Envy x360 16-ac0000 Drivers & Firmware
• Download and install the latest BIOS or firmware updates if accessible.

If the drive isn’t detected in BIOS or diagnostics, it may be a physical fault or loose connection. If you're comfortable opening the back panel, reseating the SSD can sometimes restore detection. 

Let me know what you see in BIOS—whether the drive is listed or not—and I’ll guide you further. You're doing everything right under pressure, and I’ll stay with you until this is resolved.

If my response helped, please mark it as an Accepted Solution! ✅ It helps others and spreads support. 💙 Also, tapping "Yes" on "Was this reply helpful?" makes a big difference! Thanks! 😊

Take care, and have an amazing day!

Regards, 

Hawks_Eye