HP How to Boot From USB: Complete Guide

To boot an HP laptop or desktop from a USB drive, you need to change the boot order in the BIOS/UEFI or use a one-time boot menu key during startup. This guide walks you through the exact steps for current HP models, including how to create a bootable USB, access the boot menu, and troubleshoot common issues.

Why Boot From USB on an HP?

Booting from a USB drive is essential for several tasks that you can’t do from within your operating system:

Installing a new OS: Windows, Linux, or Chrome OS installation media is commonly distributed as an ISO file that you write to a USB stick.
Running a live environment: Many Linux distributions and system rescue tools (like GParted or SystemRescue) run entirely from the USB, letting you test hardware or recover data without touching the internal drive.
Resetting or repairing Windows: If your HP won’t start normally, a bootable USB with Windows Recovery Environment or a third-party tool can help you repair startup, reset the PC, or restore from a backup.
Flashing firmware or running diagnostics: HP provides USB-based BIOS update tools and hardware diagnostics that must be booted before the OS loads.

Understanding how to boot from USB gives you a reliable fallback whenever the internal drive fails or needs a clean install.

Preparing a Bootable USB Drive

Before you can boot from USB, the drive must contain a valid bootable image. A blank or simply formatted USB won’t work. Here’s how to prepare one:

Get an ISO file of the OS or tool you want to use. For example, Microsoft offers Windows 11 ISO downloads, and most Linux distributions provide ISO files on their official websites.
Use a USB writing tool such as Rufus (Windows), BalenaEtcher (Windows/macOS/Linux), or the Windows Media Creation Tool. These tools write the ISO to the USB in a way that makes it bootable.
Choose the correct target: Ensure you select the USB drive, not your internal hard drive, to avoid overwriting data.
Use a USB 2.0 or 3.0 port: Most HP computers support booting from both, but some older models only boot from USB 2.0 ports. If you have trouble, try a different port.
Back up any data on the USB: The writing process erases everything on the drive.

For Windows installation media, the Media Creation Tool is the simplest option because it downloads the ISO and writes it in one step. For Linux or other tools, Rufus is widely recommended because it offers options for partition scheme and file system that match your HP’s firmware.

Accessing the Boot Menu on HP

HP computers have a dedicated boot menu that lets you select a one-time boot device without permanently changing the boot order. This is the quickest and safest method.

Shut down your HP completely.
Insert the bootable USB drive into a USB port.
Turn on the computer and immediately press the Esc key repeatedly (about once per second) until the Startup Menu appears.
On the Startup Menu, press F9 for Boot Device Options.
Use the arrow keys to select your USB drive from the list (it may appear as “USB Hard Drive” or “UEFI: [USB name]”).
Press Enter to boot from it.

If the Esc key doesn’t work, try pressing F9 directly during startup. Some HP models (especially older ones) use F9 for the boot menu without needing Esc first. If you see the Windows logo, you missed the window; restart and try again.

Changing the Boot Order in BIOS/UEFI

If you want the USB drive to be the first boot device every time (for example, during a multi-step installation), you can change the boot order permanently in the BIOS/UEFI setup.

Restart your HP and press F10 repeatedly during startup to enter BIOS Setup.
In the BIOS menu, use the arrow keys to navigate to the Boot tab (or Storage > Boot Order on some models).
You’ll see a list of boot devices. Use the + and – keys (or F5/F6) to move USB Hard Drive or UEFI USB to the top of the list.
Press F10 to save and exit, then confirm by selecting Yes.
The computer will restart and attempt to boot from the USB first.

After you finish installing or repairing, it’s a good idea to revert the boot order to the internal drive to avoid accidentally booting from the USB again.

UEFI vs. Legacy Boot Mode

Modern HP computers use UEFI firmware, which replaces the older BIOS. UEFI supports both UEFI and Legacy (also called CSM) boot modes. The mode you need depends on how the USB drive was created and what OS you’re installing.

UEFI mode: This is the default on most HP models. It requires a GPT partition table on the USB and is compatible with Windows 10/11 and most modern Linux distributions.
Legacy mode: This is for older operating systems (like Windows 7) or 32-bit systems. It uses an MBR partition table.

If your USB doesn’t appear in the boot menu, it might be because it’s formatted for the wrong mode. In BIOS Setup, you can switch between UEFI and Legacy under the Boot Options or Security tab. However, if you have a modern OS, stick with UEFI. Also, note that Secure Boot must be disabled for many Linux distributions; you can disable it in the Security tab of BIOS.

Common Problems and Fixes

Even with a correctly prepared USB, you might run into issues. Here are the most common ones and how to resolve them:

USB not detected in boot menu: Try a different USB port (preferably a USB 2.0 port on the back for desktops). Re-write the USB with a different tool or re-download the ISO. Check if Secure Boot is blocking it; temporarily disable Secure Boot and try again.
Computer boots to Windows anyway: This usually means the boot order wasn’t changed or the USB isn’t bootable. Confirm the USB is properly written and that you selected the correct device in the boot menu.
Black screen or error message: This can happen if the USB is corrupted or if the ISO is incomplete. Try re-writing the USB and ensure the ISO file is not truncated.
USB works on another computer but not on HP: Some HP models have a whitelist of approved boot devices, but this is rare. More likely, the USB is formatted for UEFI but your HP is in Legacy mode (or vice versa). Switch the boot mode in BIOS.
Boot menu key not working: If Esc or F9 doesn’t bring up the menu, try F12 (some HP models use F12 for boot options). Also, check if Fast Boot is enabled in BIOS; disabling it can give you more time to press the key.

If you’re still stuck, try resetting the BIOS to defaults by removing the CMOS battery (on desktops) or using the BIOS reset option in Setup.

Frequently Asked Questions

How do I boot from USB on an HP laptop without a boot menu?

If your HP laptop doesn’t show a boot menu when pressing Esc or F9, you can change the boot order in BIOS Setup (F10). Navigate to the Boot tab, move USB to the top, save and exit. Also, ensure that the USB is plugged in before you turn on the laptop.

Why won’t my HP boot from USB?

The most common reasons are: the USB isn’t properly created as bootable, the boot mode (UEFI vs Legacy) doesn’t match the USB’s partition style, Secure Boot is blocking it, or the USB port isn’t recognized during POST. Try a different port, disable Secure Boot, and re-create the USB with Rufus in UEFI mode.

What key do I press to boot from USB on HP?

On most HP computers, you press Esc during startup to open the Startup Menu, then press F9 for Boot Device Options. Some models allow pressing F9 directly. If neither works, press F10 to enter BIOS and change the boot order.

Can I boot from USB on an HP with Windows 11 already installed?

Yes. You can boot from USB even with Windows 11 installed. The process is the same: press Esc/F9 during startup and select the USB. You may need to disable Secure Boot if you’re booting a non-Windows OS, but for Windows installation media it usually works without changes.

How do I create a bootable USB for HP using Rufus?

Download Rufus and run it. Select your USB drive under “Device,” click “Select” to choose the ISO file, and leave the default settings (GPT for UEFI, FAT32 file system). Click “Start” and wait for it to finish. Then use the USB as described above.

Is it safe to boot from USB on my HP?

Yes, booting from a USB drive is safe as long as the USB comes from a trusted source and you don’t modify the internal drive unless you intend to. The USB session is isolated from your internal drive, so nothing is changed unless you explicitly install or modify partitions.

General steps for current mainstream versions; menus can differ by device and version. See the disclaimer or report an error.

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