Your HP computer stops at Boot Device Not Found or Hard Disk 3F0 instead of loading Windows. Start with the simple checks below, then test the drive to find out whether you need Windows repair or hardware service. The first fixes preserve your files.
What the error means for your next move
Your computer cannot boot from the intended operating system drive. The problem involves the boot configuration, Windows startup files, or storage hardware. Reinstalling Windows will not fix a disconnected or failed SSD.
Before changing firmware settings, retrieve your BitLocker recovery key from your Microsoft account on another device. Match the displayed key ID before entering the 48-digit key when recovery requests it. A saved printout or USB key file also works.
For a work or school computer, contact IT for the recovery key and the organization’s BIOS update or recovery procedure. Follow that process before changing firmware or starting recovery.
Disconnect accessories and reset the power
Turn off the computer.
Disconnect AC power.
Remove any disc.
Remove any memory card.
Unplug nonessential USB devices and external drives.
For an HP notebook, check your model’s power-reset instructions for removable-battery requirements or special button combinations.
On notebooks using HP’s 15-second procedure, hold the Power button for approximately 15 seconds.
For an HP desktop using the embedded-controller reset procedure, leave the power cord disconnected for five seconds.
Reconnect AC power.
Start the computer.
A power reset clears temporary state without erasing your personal files.
Restore the BIOS defaults
This corrects BIOS settings that prevent the intended drive from booting.
Shut down the computer.
Wait five seconds.
Turn it on while repeatedly pressing F10 to enter BIOS Setup.
Press F9 to load the default settings.
Press F10 to save.
Select Yes when prompted to save and exit.
If the error remains, check which drive boots first
Press F10 at startup to enter BIOS again. Open Boot Options through your model’s menu: Storage > Boot Options, System Configuration > Boot Options, or a layout under Advanced.
Move OS Boot Manager, or the drive containing Windows, to the first position using the movement keys shown on screen. Save using the displayed save command.
To test a device for one startup, turn on the computer while repeatedly pressing Esc, then press F9 for Boot Device Options. Select the intended bootable internal drive and press Enter. A successful start here does not change the saved boot order.
Keep the normal UEFI configuration for a standard Windows 11 installation, which does not support Legacy BIOS mode. HP says newer models released after 2020 no longer support Legacy Support, despite older guides recommending it. Disable Secure Boot only to address a confirmed compatibility problem with trusted hardware or media.
Test the SSD or hard drive before repairing Windows
Run HP’s preboot storage tests to check whether the drive needs service.
- 1.Turn on the computer while repeatedly pressing Esc, then press F2 to open HP PC Hardware Diagnostics UEFI.
- 2.Select Symptom Tests > Hard disk/SSD drive issue. In the component-test interface, use Component Tests > Storage > Quick Test > Run once.
- 3.Choose the affected drive or Test All Hard Drives when prompted, then run the Quick Test.
- 4.If the quick test passes but the problem continues, run the Extensive Test.
- 5.Record failures from Test Logs, including the 24-digit failure ID, and note your computer’s product number.
What to do with the diagnostic result
A failed storage test means it’s time for hardware service. Use the diagnostic’s QR code or support link to contact HP with the failure ID and product number. HP directs drive replacement after a confirmed storage-test failure; the replacement also needs an operating system restored or installed.
If diagnostics are missing, open HP’s diagnostics download page on another working PC and select Download under HP PC Hardware Diagnostics UEFI. Install it on a blank USB, then connect that USB to the affected computer. Enter diagnostics again with F2 and run the storage tests; the separate Windows edition requires Windows to start.
A drive that remains undetected needs its storage connection or hardware examined. Follow your exact model’s service instructions for reseating a removable drive; soldered storage cannot be reseated. If the error followed a hardware change, restore the original configuration using those instructions, or have a technician handle the disassembly.
If the drive passes its tests and remains accessible, move on to Windows startup repair. Recovery tools cannot make an undetected drive accessible, so resolve that storage problem before resetting or reinstalling Windows.
Repair Windows when the drive is accessible
Startup Repair addresses damaged startup files, boot configuration data, and related Windows configuration problems.
Press F11 at startup to open recovery on an HP computer with usable recovery support.
If internal recovery will not load, obtain Windows installation media matching your computer’s processor architecture using another working PC.
Boot that media through the F9 boot menu.
Select Repair my PC on the installation-media screen.
Select Next to enter recovery.
In Windows Recovery Environment, open Troubleshoot > Advanced options > Startup Repair.
Select Restart.
Enter your BitLocker recovery key if requested.
Allow Startup Repair to complete.
If startup still fails after a recent system or app change, open Troubleshoot > Advanced options > System Restore. This requires an available restore point and preserves personal files while reversing affected system and app changes.
Choose a restore point from before the problem began.
Select Next.
Select Finish to run the restore.
For trouble that began immediately after a Windows update, select Troubleshoot > Advanced options > Uninstall Updates > Uninstall latest quality update instead. Some updates cannot be removed.
If those repairs fail, back up your files before proceeding to a reset.
If you cannot access files you need to preserve, seek help before continuing.
Open Troubleshoot > Reset this PC in recovery.
Choose Keep my files to retain personal files while removing apps and settings, or Remove everything to remove personal files too.
Select Cloud download or Local reinstall.
Complete the confirmation prompts to reset Windows.
If recovery remains inaccessible or the error persists, contact HP for further diagnostics or service. Supported HP consumer models also offer HP Cloud Recovery for factory recovery, which erases data.
Frequently Asked Questions
Can I use HP Support Assistant while the computer is stuck at 3F0?
No. HP Support Assistant requires Windows to start. It is also unavailable in Windows S mode and unsupported on ARM devices. On compatible PCs, it provides BIOS updates once Windows is accessible.
Can I update the BIOS without starting Windows?
Yes, on supported models. HP consumer notebooks with the required UEFI update interface support a model-specific BIOS update USB created on another PC. Selected HP business PCs offer a direct network update in BIOS Setup. Use the instructions for your exact model and keep AC power connected.
Why does Windows Setup show no drives even when the drive is detected by hardware diagnostics?
Windows Setup needs the correct storage-controller driver. HP documents loading a model-specific Intel RST driver for affected Intel 11th-generation systems installing Windows 11. Other controller generations require their own matching package. This does not fix a drive that is absent at the hardware level.
Is there a Windows repair option that keeps my installed apps?
Yes, once Windows starts again. Eligible Windows 11 installations offer a repair reinstall through Windows Update. An in-place installation launched from matching installation media inside Windows also offers an option to keep personal files and apps. Neither method launches from a persistent 3F0 screen.
