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If you forget the power-on password, you can regain access to the server in any of
the following ways:
v If 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.
v Remove the battery from the server and then reinstall it. See “Removing the
battery” on page 97 for instructions on removing the battery.
v Change 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
108 ThinkServer RD220 Types 3729, 3779, 3797, and 3798: Installation and User Guide