Lenovo E43 Notebook - Manual (Page 39)

Chapter 2. Using your computer
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Installing device drivers - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
A compatible device driver is a requirement to ensure correct operation
and performance of each component in your computer. Lenovo provides
all the drivers you need in your hard disk.
Notes:
Most installations require a reboot to update the driver, otherwise the
system’s stability and audio or video may be compromised, or you even
have to reinstall the operating system.