Lenovo IdeaPad U400 - Manual (Page 20)

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Chapter 3. Learning the basics
Setting the Hotkey Mode
By default, the hotkey functions are accessible by pressing one single function key (F1~F12).
However, you can disable the Hotkey mode in the BIOS setup interface. To disable the Hotkey
mode, do the following:
1
Restart the computer. Press Fn + F2 to open the BIOS setup interface right after the Lenovo
logo appears.
2 In the BIOS setup interface, open the menu, and change the setting of
from Enable to Disable (or, change the setting of from
Hotkey mode to Legacy Mode (for U400 only)).
Note: If Lenovo has been enabled for your computer, you cannot press Fn + F2 at startup to
open the BIOS setup interface. In such case, turn off the computer, press the OneKey Rescue
System button, and then select to open the BIOS setup interface.
Note: In the Legacy mode, you may access the hotkey function by pressing the appropriate hotkey
while holding the Fn key.