Appendix B Statement Of Volatility - HP ProDesk 480 G3 MT Maintenance And Service Manual

B Statement of Volatility
HP confirms that Intel-based business desktop systems contain DDR4 volatile memory (memory amount
depends on the customer configuration). In addition, the motherboard in the condition originally shipped
without subsequent modification or the addition or installation of any applications, features, or functionality,
contain the following nonvolatile memory: Real Time Clock battery backed-up configuration memory (256
Bytes), DIMM Serial Presence Detect (SPD) configuration 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 flash 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
to enter BIOS setup screen.
4. Select Security > Restore Security Settings to Factory Defaults. Select Yes to confirm. 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:
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 Configuration.
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 confirm.
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.
Although the TPM security keys will be cleared, data in the non-volatile memory indices may
F10 key
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