Lenovo Ideapad 300S-11IBR User Manual page 21

 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.
Getting help

How can I contact the customer support center?
See "Chapter 3. Getting help and service" of Lenovo Safety and General
Information Guide.
Chapter 3. Troubleshooting
17