How to – clear or reset a HP Server Gen9 NVRAM using System Maintenance Switch on the system board

In case of POST errors and boot issues due to incorrect BIOS values initialization it might be necessary to clear/reset the CMOS and NVRAM of your HP Server Gen9.

You can do this in three different ways:

  • using the System Maintenance Switch on the system board
  • using Intelligent Provisioning
  • using the ROM-Based Setup Utility

This How-to describes, how to clear the CMOS and NVRAM using the System Maintenance Switch on the system board:

  • power down the server
  • disconnect the power plugs
  • open the server

Now you have to identify the system maintenance switch:

At the server cover you can find a plan to locate the switch:

Clear_NVRAM_HP_Gen9_2Clear_NVRAM_HP_Gen9_1

Now change position 6 of the system maintenance switch from the default position “off” to “on”:

Clear_NVRAM_HP_Gen9_3

  • connect the power plugs and power up the server

The following message will be displayed:

Maintenance switch detected in the ON position. The system is being default configured. This may take a few minutes… Power off the server and toggle the maintenance switch to the OFF position.

maintenance_switch_on

  • shut down the server and disconnect the power plugs
  • change position 6 back to “off”
  • connect the power plugs and power up the server

3 Comments

  1. Paolo

    Very well documented – great job!

  2. kimsjacks

    Thank you. Its a very tricky error.

  3. Darthvikes

    Nice! Thanks! Fixed a missing Intelligent Provisioning F10 option with this.

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