Lenovo 3797 manual

If you forget the power-on password, you can regain access to the server in any of the following ways:

vIf an administrator password is set, type the administrator password at the password prompt. Start the UEFI Setup Utility program and reset the power-on password.

vRemove the battery from the server and then reinstall it. See “Removing the battery” on page 97 for instructions on removing the battery.

vChange the position of the power-on password switch (enable switch 5 of the system board switch block (SW3)
4) to bypass the power-on password check (see the following illustration).

1 UEFI boot recovery jumper (J29)

2 IMM recovery jumper (J147)

3 SW4 switch block (reserved)

4 SW3 switch block

108ThinkServer RD220 Types 3729, 3779, 3797, and 3798: Installation and User Guide