Lenovo System x3550 M4 Installation And Service Manual page 116

password has access to the full Setup utility menu; the system administrator can give the user authority to
set, change, and delete the power-on password. A user who types the power-on password has access
to only the limited Setup utility menu; the user can set, change, and delete the power-on password, if the
system administrator has given the user that authority.
Power-on password
If a power-on password is set, when you turn on the server, you must type the power-on password to
complete the system startup. You can use any combination of 6 - 20 printable ASCII characters for the
password.
When a power-on password is set, you can enable the Unattended Start mode, in which the keyboard and
mouse remain locked but the operating system can start. You can unlock the keyboard and mouse by
typing the power-on password.
If you forget the power-on password, you can regain access to the server in any of the following ways:
• If an administrator password is set, type the administrator password at the password prompt. Start the
Setup utility and reset the power-on password.
• Remove the battery from the server, wait 30 seconds, and then reinstall it.
• Change the position of the power-on password switch (switch 4) on the system board switch block (SW3)
to bypass the power-on password check (see Table 3 "System board SW3 switch block definition" on
page 29 for more information).
Figure 84. System-board switches, jumpers, and buttons
Attention: Before you change any switch settings or move any jumpers, turn off the server; then,
disconnect all power cords and external cables. See the safety information that begins "Safety" on page
102
System x3550 M4 Installation and Service Guide