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      M91/M91p System Brand ID may show LENOVO in BIOS Setup Utility screen - ThinkCentre M91, M91p



      Some FRU System Boards "System Brand ID" may show "LENOVO" as below.

      Before replacing the original System Board with FRU stock, the original system board may have shown a specific Brand ID such as "ThinkCentre M91" or "ThinkCentre M91p".

      Press F1 key to enter LENOVO BIOS Setup Utility -> Main.

      | Machine Type and Model INVALID
      | System Brand ID LENOVO
      | System Serial Number INVALID
      | Asset Tag
      | System UUID xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
      | Ethernet MAC Address xx-xx-xx-xx-xx-xx
      | BIOS Revision Level 9HKT37AUS
      | Boot Block Revision Level 9H37A
      | BIOS Date (MM/DD/YYYY) 02/14/2011

      This is normal behavior since some System Board FRUs may be common for multiple Brand IDs.

      Affected configurations

      The above symptom is associated with, but not limited to, the following systems:

      • ThinkCentre M91, M91p

      Additional information:

      M91/M91p System Board FRU P/N 03T8007.


      Do not replace any hardware for this issue.

      Step 1. Download the BIOS package through the Lenovo support site.

      Click here to Lenovo support site

      Flash BIOS update - ThinkCentre M81, M91, M91p / ThinkStation E30
      USB Drive UEFI BIOS Flash Package ( All operating systems listed )

      Step 2. Unzip the BIOS package to a DOS bootable USB key.
      Use the following parameter to write a System Brand ID with <"String"> you specified:

      - AMIDEDOS.EXE /SV <"String">

      For example,

      - AMIDEDOS.EXE /SV "ThinkCentre M91p"
      - AMIDEDOS.EXE /SV "ThinkCentre M91"

      Step 3. Perform usual Flash BIOS update operation using normal Flash BIOS update packages.
      You may need to update the Machine Serial, in addition the Machine Type/Model.

      If you do not have DOS bootable USB Memory key, you can perform the update to the System Brand ID using the following steps:

      - Power on system > Press F12 key to invoke Startup Device Menu > Insert Flash BIOS update CD then boot CD > Press Ctrl-C to break > Type, AMIDEDOS.EXE /SV <"String">.


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      • Alias ID: SF11-D0131
      • Document ID: HT052628
      • Last Updated :17 Jun 2014
      • © 2016 Lenovo