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HP PC Hardware Diagnostics

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What HP PC Hardware Diagnostics is

HP PC Hardware Diagnostics is a free set of Windows and UEFI tools for checking computer components and helping identify hardware failures. The Windows version runs on Windows 10 and 11, tests hardware, and offers driver checks and updates for select components. Documented checks include processor, memory, storage, power, audio, Bluetooth, fan, keyboard, mouse or touchpad, network, and video; available tests depend on the installed components. Its Fast Test checks disk read, video memory, wireless, CPU stress, and battery, and takes about 3 to 5 minutes or more depending on configuration. UEFI diagnostics runs outside the operating system, so it can be launched from the F2 startup menu or a USB flash drive when Windows will not start. The tools can generate a 24-digit failure ID to enter with a product number when beginning a repair process. HP says the Windows application comes pre-installed on new HP computers and can also be downloaded from its diagnostics page or the Microsoft Store. UEFI tests are intended for genuine HP hardware; HP does not guarantee they work on other manufacturers’ products.

Who it suits

It suits HP computer users who need to check components in Windows or diagnose a system that cannot start. The broader 4-in-1 USB Key is described for authorized service partners and IT professionals.

What it does well

  • Tests a range of listed hardware components.
  • UEFI diagnostics can run from USB.
  • Generates a 24-digit failure ID for repair initiation.
  • Windows version supports Windows 10 and 11.

What to know first

  • UEFI tests are intended for genuine HP hardware.
  • Available tests depend on installed components.
  • Windows memory Quick Test is unavailable.

Limits

The Windows memory Quick Test is not currently available. Test availability can vary by installed components, and HP does not guarantee that UEFI tests will work correctly on hardware from other companies.

Getting started

  1. On a new HP computer, open the pre-installed Windows diagnostics tool.
  2. Alternatively, download the Windows tool from HP's diagnostics page or the Microsoft Store.
  3. For a computer that cannot start Windows, launch UEFI diagnostics from the F2 startup menu.
  4. Alternatively, install UEFI diagnostics on a USB flash drive and run it from there.
  5. Enter a generated 24-digit failure ID with the product number to begin a repair process.

Verdict

HP PC Hardware Diagnostics provides component checks in Windows and a separate UEFI route for systems that cannot boot. Check hardware compatibility and test availability before relying on a particular diagnostic.

Questions

Does HP PC Hardware Diagnostics cost anything?

The diagnostics are free.

Which Windows versions are supported?

The current Windows tool supports Windows 10 and Windows 11.

Can I use it if Windows will not start?

Yes. HP directs users to run UEFI diagnostics from the F2 startup menu or from a USB flash drive.

What happens when a test finds a failure?

The diagnostics can generate a 24-digit failure ID. Enter it with the product number to begin a repair process.

Are UEFI diagnostics suitable for non-HP hardware?

HP says UEFI tests can only be performed correctly on genuine HP hardware and does not guarantee operation on other companies' products.

Facts from HP PC Hardware Diagnostics's own pages

4-in-1 USB Key
The 4-in-1 USB Key combines Windows and UEFI diagnostics, dock and display diagnostics, and BIOS recovery files for supported systems; HP describes it for authorized service partners and IT professionals. · support.hp.com, 3 Oct 2026
Boot troubleshooting
When Windows cannot start, HP directs users to run UEFI diagnostics from the F2 startup menu or from a USB flash drive. · support.hp.com, 3 Oct 2026
Compatibility limit
Available tests can differ depending on the components installed on the computer. · support.hp.com, 4 Oct 2026
Component checks
Documented component tests include processor, memory, storage, power, audio, keyboard, network, and video checks. · support.hp.com, 3 Oct 2026
Download options
HP says the Windows tool can be downloaded from its diagnostics page or the Microsoft Store. · support.hp.com, 4 Oct 2026
Failure reporting
When a component fails, diagnostics can provide a 24-digit failure ID for contacting HP Customer Support. · support.hp.com, 4 Oct 2026
Fast test
The Windows Fast Test checks disk read, video memory, wireless, CPU stress, and battery, and takes about 3 to 5 minutes or more depending on system configuration. · support.hp.com, 4 Oct 2026
Hardware compatibility
HP states that UEFI diagnostics tests can only be performed correctly on genuine HP hardware and does not guarantee operation on other companies’ products. · support.hp.com, 3 Oct 2026
Intended users
The 4-in-1 USB Key is described for HP authorized service partners and IT professionals supporting mixed environments of older and newer HP/Compaq PCs. · support.hp.com, 4 Oct 2026
Other diagnostic tools
HP also offers a Windows tool for diagnosing connected HP dock and display hardware. · support.hp.com, 3 Oct 2026
Preinstallation
HP PC Hardware Diagnostics Windows comes pre-installed on new HP computers. · support.hp.com, 4 Oct 2026
Purpose
HP provides diagnostic software to test computer hardware components and confirm hardware failures. · support.hp.com, 4 Oct 2026
Remote diagnostics
Remote PC Hardware Diagnostics UEFI can be configured to download and run UEFI diagnostics and optionally upload a diagnostic log through F10 setup on select business products. · support.hp.com, 3 Oct 2026
Support
HP’s diagnostics support page directs users who receive a 24-digit failure code to enter it with their product number to start a repair process. · support.hp.com, 3 Oct 2026
Supported Windows versions
The current Windows tool supports Windows 10 and Windows 11. · support.hp.com, 4 Oct 2026
Test coverage
The documented component tests include processor, memory, storage, power, audio, Bluetooth, fan, keyboard, mouse or touchpad, network, and video tests. · support.hp.com, 4 Oct 2026
UEFI diagnostics
HP PC Hardware Diagnostics UEFI runs outside the operating system to help identify, isolate, and diagnose hardware issues. · support.hp.com, 3 Oct 2026
UEFI version
HP PC Hardware Diagnostics UEFI runs outside the operating system to help identify, isolate, and diagnose hardware issues. · support.hp.com, 4 Oct 2026
USB use
HP says UEFI diagnostics can be installed on a USB flash drive and run when diagnostics on the computer's hard drive are unavailable. · support.hp.com, 4 Oct 2026
Windows diagnostics
HP PC Hardware Diagnostics Windows tests hardware components within Windows and is supported on Windows 10 and 11. · support.hp.com, 3 Oct 2026
Windows features
The Windows tool offers driver checks and updates for select components and can test hardware components. · support.hp.com, 4 Oct 2026
Windows test limit
The documented memory Quick Test is not currently available in the Windows version. · support.hp.com, 4 Oct 2026
Windows version
HP PC Hardware Diagnostics Windows runs within Windows to diagnose hardware failures. · support.hp.com, 4 Oct 2026

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