Lenovo Y520-15IKBN User Manual page 25

When do I need to restore the system to its factory status?
Use this feature when the operating system fails to start up. If there is critical data on the system
partition, back it up before starting recovery.
When the operating system is running, I press the Novo Button, but the Lenovo OneKey Recovery
System is not started.
The Lenovo OneKey Recovery System is not preinstalled on your computer or it has been
uninstalled.
Is the Lenovo OneKey Recovery System preinstalled on all Lenovo notebook computers?
No. Lenovo OneKey Recovery System is available only on computers preinstalled with Windows.
Note: The Lenovo OneKey Recovery System may not be available on some Lenovo computers with
preinstalled Windows. To check your computer, go to Control Panel
Lenovo OneKey Recovery is included in the installed programs list.
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BIOS setup utility
What is the BIOS setup utility?
The BIOS setup utility is ROM-based software. It communicates basic computer information and
provides options for setting boot devices, security, hardware mode, and other preferences.
How can I start the BIOS setup utility?
To start the BIOS setup utility:
1
Shut down the computer.
2
Press the Novo button and then select BIOS Setup.
How can I change the boot mode? (on select models)
There are two boot modes: UEFI First and Legacy Support. To change the boot mode, start the
BIOS setup utility and set boot mode to UEFI First or Legacy Support on the boot menu.
When do I need to change the boot mode? (on select models)
The default boot mode for your computer is UEFI First mode. If you need to install a legacy
Windows operating system on your computer, you must change the boot mode to Legacy
Support. The legacy Windows operating system cannot be installed if you don't change the
boot mode.
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Getting help
How can I contact the customer support center?
See "Chapter 3. Getting help and service" of Lenovo Safety and General Information Guide.
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Chapter 4. Troubleshooting
Programs and check whether