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Chapter 2. Learning the basics
Using passwords
Using passwords helps prevent your computer from being used by others.
Once you set a password and enable it, a prompt appears on the screen each
time you power on the computer. Enter your password at the prompt. The
computer cannot be used unless you enter the correct password.
For details about how to set the password, see the Help to the right of the
screen in BIOS setup utility.
Enabling NVIDIA
®
Optimus™ (on select models)
- - - - - - - - - - - - - - -
Optimus is a GPU switching mechanism which automatically switches the
active GPU to perform image-rendering tasks. If no graphics-intensive
programs are running, the integrated GPU will be selected as the active GPU
to preserve battery life; if you start high-definition movie playback or a 3D
game, the image-rendering task is automatically switched by Optimus to the
discrete GPU to produce high graphics performance.
Check the GPU indicator: if the indicator is off, slide and release the GPU
switch to enable Optimus.
When Optimus is enabled, switching between integrated and discrete GPUs
is performed automatically without user intervention. However, you can
customize settings through the NVIDIA control panel to make the desired
GPU active to perform image-rendering tasks for certain programs. For
details, search for Optimus in the help system of the NVIDIA control panel.
Note: This password can be from one to seven alphanumeric characters in any combination.
Note: To enter BIOS setup utility, press F2 when the Lenovo logo appears on the screen
while the computer is starting up.
Notes:
• Optimus is not supported by all operating systems. Currently, Optimus is supported by
Windows
®
7. If you are using another operating system, such as Windows
®
XP, it may not
be able possible to enable Optimus.
• Optimus is not supported by all media players and video compression standards.