Lenovo ThinkStation P920, Hardware Maintenance Manual, Page: 79 / 246

4. Follow the instructions on the right side of the screen to set, change, or delete a password.
Note: A password can be any combination of up to 64 alphabetic and numeric characters. For more
information, see “Password considerations” on page 70.
5. To save settings and exit the Setup Utility program, press F10 or Fn+F10 (depending on the keyboard
settings). Then, select Yes in the window displayed, and press Enter.
Erasing lost or forgotten passwords (clearing CMOS)
This section provides instructions on how to erase lost or forgotten passwords, such as a user password.
Note: The instructions in this section do not apply to the hard disk password.
To erase a lost or forgotten password, do the following:
1. Remove any media from the drives and turn off all connected devices and the computer. Then,
disconnect all power cords from electrical outlets and disconnect all cables that are connected to the
computer.
2. Remove the computer cover. See Chapter 9 “Hardware removal and installation” on page 103.
3. Locate the Clear Complementary Metal Oxide Semiconductor (CMOS) /Recovery jumper on the system
board. See “Hardware locations” on page 29.
4. Move the jumper from the standard position (pin 1 and pin 2) to the maintenance position (pin 2 and pin
3).
5. Reinstall the computer cover and connect the power cord. See Chapter 9 “Hardware removal and
installation” on page 103.
6. Turn on the computer and leave it on for approximately 10 seconds. Then, turn off the computer by
holding the power button for approximately five seconds.
7. Repeat step 1 and step 2.
8. Move the Clear CMOS /Recovery jumper back to the standard position (pin 1 and pin 2).
9. Reinstall the computer cover and connect the power cord.
Selecting a startup device
If your computer does not start up from the expected device, you can either change the startup device
sequence or select a temporary startup device.
Changing the startup device sequence permanently
To change the startup device sequence permanently, do the following:
1. Depending on the type of the storage device, do one of the following:
• If the storage device is internal, go to step 2.
• If the storage device is a disc, ensure that your computer is turned on. Then, insert the disc into the
optical drive.
• If the storage device is an external device other than a disc, connect the storage device to the
computer.
2. Start the Setup Utility program. See “Starting the Setup Utility program” on page 67.
3. Select Startup .
4. Follow the instructions on the right side of the screen to change the startup device sequence.
5. To save settings and exit the Setup Utility program, press F10 or Fn+F10 (depending on the keyboard
settings). Then, select Yes in the window displayed, and press Enter.
Chapter 6
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Advanced configuration
71