Dell EMC PowerEdge M640 Installation and Service Manual

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Disabling a forgotten password

The software security features of the PowerEdge M640 system include a system password and a setup password. The password jumper enables these password features or disables them, and clears any password(s) currently in use.

Prerequisites

  • CAUTION: Many repairs may only be done by a certified service technician. You should only perform troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or telephone service and support team. Damage due to servicing that is not authorized by Dell is not covered by your warranty. Read and follow the safety instructions that came with the product.

Steps

  1. Turn off the system by using the operating system commands or the CMC.
  2. Remove the system from the enclosure to access the jumpers.
  3. Move the jumper on the system-board jumper from pins 2 and 3 to pins 1 and 2.
  4. Install the system in the enclosure.
  5. Turn on the system. When the system is turned on, power indicator turns on to solid green. Allow the system to finish booting.

    The existing passwords are not disabled (erased) until the system boots with the password jumper on pins 2 and 3. However, before you assign a new system and/or setup password, you must reinstall the password jumper back to pins 1 and 2.

    • NOTE: If you assign a new system and/or setup password with the jumper on pins 2 and 3, the system disables the new password(s) the next time it boots.
  6. Turn off the system by using the operating system commands or the CMC.
  7. Remove the system from the enclosure to access the jumpers.
  8. Move the jumper on the system-board jumper from pins 1 and 2 to pins 2 and 3.
  9. Install the system in the enclosure.
  10. Turn on the system.
  11. Assign a new system and/or setup password.

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