Lenovo L2440X - Manual (Page 14)

Power on the monitor and the computer.
To install the monitor driver, insert the Reference and Driver CD, click Install
driver, and follow the on-screen instructions.
To optimize your monitor image, if using the analog cable, press the Automatic
Image Setup key. Automatic image setup requires that the monitor is warmed up for
at least 15 minutes. This is not required if you are using the DVI cable.
Note: If automatic image setup does not establish the image that you prefer, perform
manual image setup. See “Manual image setup” on page 3-4.
1-10 L2440x Wide Flat Panel Monitor User’s Guide