Lenovo ideacentre 510S, Hardware Maintenance Manual, Page: 48 / 92

3. Depending on the password type, select Set Power-On Password , Set Administrator Password , or
Hard Disk Password and press Enter.
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 41.
5. Exit the Setup Utility program. See “Exiting the Setup Utility program” on page 43.
Erasing lost or forgotten passwords (clearing CMOS)
This section provides instructions on how to erase lost or forgotten passwords, such as a user 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 6 “Installing or replacing hardware” on page 47.
3. Locate the Clear CMOS /Recovery jumper on the system board. See “Hardware locations” on page 27.
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 6 “Installing or replacing
hardware” on page 47.
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 through 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 the computer does not start up from a device as expected, you can choose to change the startup device
sequence permanently 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 the computer is on or turn on the computer. 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 39.
3. Select Startup .
4. Follow the instructions on the right side of the screen to change the startup device sequence.
5. Exit the Setup Utility program. See “Exiting the Setup Utility program” on page 43.
Selecting a temporary startup device
Note: Not all discs and storage drives are bootable.
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ideacentre 510SHardware Maintenance Manual