When swith on laptop showing boot devise not found

[Gayantha]

When turn on laptop showing boot devise not found 

please install an operating system on your hard disk. 
Hard disk - (3F0)

F2 system diagnostics 

for more information, please visit : www.hp.com\go\techcenter\startup

showing this message please help me sorting this problem 

[Dragora]

Hi Gayantha

The message "Boot Device Not Found (Hard Disk - 3F0)" on your HP laptop means that the computer's basic input/output system (BIOS) or UEFI firmware cannot locate the hard drive or SSD that contains the operating system (Windows).

This is a common HP-specific error that usually points to a configuration issue or a failure of the physical storage device.

Step 1: Test the Hard Drive (Crucial Diagnostic)

Since your HP laptop is giving you a system diagnostics option, the first thing to do is run the built-in hardware test to check the health of the hard drive itself.

1. Restart your laptop.

2. Immediately and repeatedly press the Esc key. This should bring up the Startup Menu.

3. Press F2 for System Diagnostics.

4. In the Diagnostics menu, find and run a Hard Drive Test (look for Component Tests or Symptom Tests). Run the Quick Test first.

• If the drive passes the test: The hard drive is physically OK, and the problem is a software or BIOS setting (go to Step 2).

• If the drive fails or is not found: The hard drive has likely failed or become physically disconnected. You will need to check the physical connection or replace the drive (go to Step 3).

Step 2: Fix Configuration Issues (If Hard Drive Passes)

If the drive passes the test, the problem is most likely a BIOS setting error that can be fixed with a Hard Reset and BIOS Defaults Restore.

A. Perform a Hard Reset

This clears residual power that may interfere with hardware detection.

1. Shut down the laptop completely.

2. Disconnect the AC adapter (charger).

3. Remove any external devices (USB drives, printers, etc.).

4. If your laptop has a removable battery, remove it.

5. Press and hold the Power Button for at least 15 seconds to drain any residual charge.

6. Insert the battery (if removable) and plug in the AC adapter.

7. Turn on the laptop.

B. Restore BIOS Default Settings

This corrects any accidental or corrupted changes to the boot order or other settings.

1. Shut down the laptop.

2. Turn it on and immediately and repeatedly press F10 to enter the BIOS Setup Menu. (If F10 doesn't work, try Esc then F10).

3. In the BIOS menu, look for an Exit or Security tab.

4. Select Load Setup Defaults or Restore Defaults (often by pressing F9 while in the BIOS).

5. Confirm your choice.

6. Select Exit Saving Changes (often by pressing F10).

7. The laptop will restart. See if the issue is resolved.

Step 3: Advanced/Hardware Troubleshooting

If the above steps don't work, or the drive failed the diagnostics, you may have a more serious issue.

• Check Boot Mode (UEFI/Legacy): If your laptop is an older model, a recent BIOS update or power loss may have reset the boot mode. Go into the BIOS (F10), look for a System Configuration or Boot Options tab, and check the settings for Secure Boot and Legacy Support. You may need to disable Secure Boot and enable Legacy Support, or vice versa, depending on how Windows was originally installed. Be cautious when changing these settings.

• Physical Hard Drive Check: If you are comfortable and your laptop's warranty allows, you may need to open the laptop to ensure the hard drive/SSD is properly and securely seated in its connection port. A simple jolt can sometimes slightly dislodge the connector.

• Operating System Corruption: If the drive passes the hardware test but the laptop still can't boot, the files needed to start Windows (the Master Boot Record or Boot Configuration Data) may be corrupted. This requires creating a Windows Installation/Recovery USB drive on another computer to perform a Startup Repair or a full Reinstall of Windows.

The video below offers a visual guide on how to perform the most common fixes for the 3F0 error, including checking the boot settings in the HP BIOS.

How to Fix 3F0 boot device not found or hard drive error on a Hp laptop, Hard Disk not found (3F0).

or  HP PCs - Hard disk 3F0 boot device not found error 

I hope the above is helpful!