B Statement of Volatility
HP conrms that business desktop systems contain DDR4 volatile memory (memory amount depends on
the customer conguration). In addition, the motherboard in the condition originally shipped without
subsequent modication or the addition or installation of any applications, features, or functionality, contain
the following nonvolatile memory: Real Time Clock battery backed-up conguration memory (256 Bytes),
DIMM Serial Presence Detect (SPD)
conguration data (256 Bytes per module, 128 Bytes programmable),
Serial Peripheral Interface (SPI) ROM for System BIOS (16M Bytes) and Super I/O’s: masked keyboard ROM
(overall 2K Bytes). In addition, these units contain a Trusted Platform Module (TPM) that contains 16K Bytes
of non-volatile memory for user data. The volatile memory will not hold any user data once power has been
removed for 30 seconds or longer.
To restore the Non-Volatile memory:
1. Download the latest BIOS (system ROM) from the HP website.
2. Follow the instructions to ash the BIOS that are found on the website.
3. Turn on the system, and while system is powering on, and after the HP splash screen, press the F10 key
to enter BIOS setup screen.
4. Select Security > Restore Security Settings to Default. Select Yes to conrm. The system will reboot.
This action will reset the settings in the Security menu to their defaults, reset the TPM and embedded
Fingerprint reader (if present), and clear the passwords.
NOTE: Although the TPM security keys will be cleared, data in the non-volatile memory indices may
not be. Data stored in these indices should not contain security sensitive information. If an application
locks down and secures the non-volatile indices, these indices cannot be cleared.
5. Re-enter the F10 setup utility.
6. Select Advanced > Secure Boot Conguration.
7. Select Reset Secure Boot Keys to factory defaults.
8. Press the F10, and the select Yes to save changes.
9. Re-enter the F10 setup utility.
10. Select Apply Factory Defaults and Exit, and the select Yes to conrm.
11. Re-enter the F10 Setup Utility and select Save Custom Defaults to erase any custom values previously
saved.
If Absolute Persistence Module is enabled on the computer, see the service provider for instructions to disable
the feature.
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