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:


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


  • 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.


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


  1. Paolo

    Very well documented – great job!

  2. kimsjacks

    Thank you. Its a very tricky error.

  3. Altus300

    I have HP 440 G6 I forgot my password and tried boot from USB but F10 key dosen’t work
    Any Help me pls
    Thank you

  4. Dk3000

    Thanks. Restored F10 (IP) for me also.

  5. Jay

    I have a problem with my hpe proliant dl20 gen 9. When i press pwr on, there is a notif “the system is being default configured, this may take few minutes…
    When complete,the system will automatically power cycled”. Just it. Nothing else. I cant do anything at this time,approximately after a min the power button show stand by color. A solid amber. It repeadtly until my finger tired to try on it. Please help. Many thanks.

  6. Mahmoud Zohori

    I have HP DL 380 G5 it my home lab;

    i have insert (SSP DVD) to update my bios and firmware and , so while its began installing new updates the server is powered off because of electricity , and after 1 hour the electricity is came back , i powered on the server but nothing seen on the screen and the fan still working with all full power,

    i have tried many things but nothing worked,

    so is any way to fix my bios firmware !!!???

    pleasee help

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