HP EliteDesk 705 G3 Small Form Factor PC User Manual download pdf (Page 146)

C Statement of Volatility

HP conrms that AMD-based business desktop HP EliteDesk 705 G3 Microtower and Small Form Factor

systems contain DDR4 volatile memory (memory amount depends on the customer conguration). In

addition, the motherboard in the condition originally shipped without subsequent modication or the addition

or installation of any applications, features, or functionality, contain the following nonvolatile memory: Real

Time Clock battery backed-up

conguration memory (256 Bytes), DIMM Serial Presence Detect (SPD)

conguration data (256 Bytes per module, 128 Bytes programmable), Serial Peripheral Interface (SPI) ROM

for System BIOS (8M 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.

The following procedure shows the steps that should be taken 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.

Flashing the BIOS will reset it back to factory settings.

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 > System Security from the main menu. If the Embedded Security Device Support

option is set to “Disable”, skip to step 7.

5. To erase all security keys from the TPM:

Under Embedded Security Device in the System Security menu, congure Reset to Factory Settings to

Reset.

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.

6. Press F10 to accept changes.

7. To clear the secure boot key database:

a. Enter the F10 setup utility.

b. Go to the Security menu.

c. Select Secure Boot Conguration.

d. In the Key Management section, select clear Secure boot keys.

e. Use space key to select clear.

f. Press the F10 key to accept changes.

g. From the main menu select File > Save Changes and Exit.

8. If the Ownership Tag or Asset Tag is set, manually clear it under Security > System Ids.

9. Select File > Save Changes and Exit.

10. To clear the Setup or Power-On passwords if set, and clear any other settings, power down the computer

and remove the AC power cord and the computer hood.

138 Appendix C Statement of Volatility

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HP EliteDesk 705 G3 Small Form Factor PC User Manual Page 146