How do I start UEFI Diagnostics from a USB

[Buffalo_Rider]

Anyone know how to start up the UEFI Diagnostics on a Workstation when the UEFI Diagnostics program or code files are on a USB?  

I downloaded the code part "sp143798.exe" on 1/30/23, which is the executable for installing the UEFI Diagnostics.  During the installation process we can choose to install in on the hard drive (Recommended) or on a USB.  I tried installing it on my hard drive and could not - message said I have too many partitions.  So I installed it onto a USB drive.  

Since there were no instructions on how to start the UEFI Diagnostics that came with the executable, I went to the HP Community Pages and to Internet Searches in general to find out how to do this.   Some places said to power up the PC pushing the ESC key, some said power up the PC pushing or tapping on the F2 key.  We can bring up the BIO by tapping on the F10 key, change the boot by pushing on the F9 key, and so on.  None of these options cause the UEFI Diagnostics to come up.  

Are there preconditions - like settings in the PC - that must be a certain way before the UEFI Diagnostics (from USB) will come up?   I found a 2017 article that said the USB thumb drive must be empty, and the PC's Secure Boot needs to be disabled.  Are these true?  Are there other preconditions? 

[Prométhée]

hi

HP PCs - Testing for Hardware Failures | HP® Customer Support

Have you seen this document, the most recent to my knowledge?

I don't know if a difference with your type of computer, but as you can see, there are three possibilities, at least
On windows, curious that it didn't work
Via f2 at startup
or indeed usb key

When you are unable to start Windows, download HP PC Hardware Diagnostics UEFI at the HP Hardware Diagnostics website.

Install HP PC Hardware Diagnostics UEFI to a blank USB drive if necessary. Access them from a USB drive by disabling Secure Boot. For instructions to disable Secure Boot, see HP PCs - Secure Boot (Windows 10).

1. To download the latest version, go to the HP Hardware Diagnostics website.

2. On the HP Hardware Diagnostics website in the Unable To Boot Windows, Or Is Windows Locked Up? section, click Download HP Diagnostics UEFI.

Testing hardware with HP PC Hardware Diagnostics from an external USB device

If the HP PC Hardware Diagnostics cannot test the computer from the hard drive, run the tests from a USB device. To do so, download and install the latest version of HP PC Hardware Diagnostics (UEFI) on a USB device.

1. Turn off the computer.

2. Insert the USB device with HP PC Hardware Diagnostics into a USB port on the computer.

3. Turn on the computer, then press the Esc key repeatedly until the Startup menu displays.

   Note:

   If you cannot start the computer from the USB storage device, temporarily disable Secure Boot from the BIOS. For instructions, see HP PCs - Secure Boot (Windows 10).

4. Press f2 to select System Diagnostics.

   etc