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3.
Enter the product name or number.
– or –
Select Identify now to let HP automatically detect your product.
4.
Select your computer, and then select your operating system.
5.
In the Diagnostic section, follow the on-screen instructions to select and download the UEFI version
you want.
Additional BIOS crisis recovery tool
HP provides a BIOS crisis recovery tool through the HP PC Hardware Diagnostics 3-in-1 USB key. This tool can
be used by HP authorized service providers to recover systems that have failed due to a corrupted BIOS. For
more information about using the 3-in-1 USB key for BIOS crisis recovery, go to
techcenter/pcdiags. Additional information is included in the web-based training offered by HP University. See
the modules that cover HP PC Hardware Diagnostics (UEFI).
Blink and beep codes
Some system errors prevent the use of the video screen; instead, the system provides error information
through blink codes using lights. The codes are presented in a sequence. Audible long and short beeps
accompany blinks, respectively. The following table describes the meaning of critical blink codes.
Num lock
light
2
8
3
4
5
7
88
Chapter 8 Using HP PC Hardware Diagnostics (UEFI)
Battery light
Description
The main area (DXE) of BIOS has become corrupted and there is no recovery binary image
available.
The embedded controller policy requires the user to enter a key sequence (SureStart 2.0).
White and amber blinking
The embedded controller is recovering the boot block or DXE. It takes about 10 seconds
to load the DXE image and get video in the DXE case.
The embedded controller has timed out waiting for BIOS to return from memory
initialization.
The embedded controller has timed out waiting for BIOS to return from graphics
initialization.
The system board displays a power failure (crowbar).
The processor is not detected.
The processor does not support an enabled feature (typically this applies only to TXT).
1
The embedded controller cannot find valid firmware.
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