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Selecting a temporary startup device
Use this procedure to select a temporary startup device.
Note: Not all discs and hard disk drives are bootable.
1. Turn off your computer.
2. Repeatedly press and release the F12 key when turning on the computer. When the Please select
boot device window displays, release the F12 key.
3. Select the desired startup device and press Enter. The computer will start up from the device you
selected.
Note: Selecting a startup device from the Please select boot device window does not permanently change
the startup sequence.
Selecting or changing the startup device sequence
To view or permanently change the congured startup device sequence, do the following:
1. Start the Setup Utility program. See “Starting the Setup Utility program” on page 55.
2. From the Setup Utility program main menu, select Startup.
3. Select the devices for the Primary Startup Sequence, the Automatic Startup Sequence, and the Error
Startup Sequence. Read the information displayed on the right side of the screen.
4. Press F10 to save changes and exit the Setup Utility program. See “Exiting the Setup Utility program”
on page 58.
Changing the BIOS settings before installing a new operating system
BIOS settings vary by operating system. Change the BIOS settings before installing a new operating system.
To change the BIOS settings, do the following:
1. Start the Setup Utility program. See “Starting the Setup Utility program” on page 55.
2. From the Setup Utility program main menu, select Exit ➙ OS Optimized Default.
3. Depending on the operating system to be installed, do one of the following:
• To install the Windows 8 (64-bit) or Windows 8.1 (64-bit) operating system, select Enabled.
• To install an operating system other than Windows 8 (64-bit) or Windows 8.1 (64-bit), select Disabled.
4. Select Yes in the window displayed and press Enter to conrm your selection.
5. Press F10 to save changes and exit the Setup Utility program. See “Exiting the Setup Utility program”
on page 58.
Exiting the Setup Utility program
After you nish viewing or changing settings, press Esc to return to the Setup Utility program main menu.
You might have to press Esc several times. Do one of the following:
• If you want to save the new settings, press F10 to save changes and exit the Setup Utility program.
• If you do not want to save the settings, select Exit ➙ Discard Changes and Exit, and then press Enter.
When the Reset Without Saving window shows, select Yes, and then press Enter to exit the Setup
Utility program.
• If you want to return to the default settings, press F9 to load the default settings, and then press F10 to
save and exit the Setup Utility program.
58 ThinkCentre E73z Hardware Maintenance Manual