You probably have to press a Fn key to divert it to an external monitor. You didn't list the brand and model #, so check your Help section on the computer or look in the manual or do a Google search for it.
The information on Computing.Net is the opinions of its users. Such
opinions may not be accurate and they are to be used at your own risk.
Computing.Net cannot verify the validity of the statements made on this
site. Computing.Net and BestOfMedia LLC hereby disclaim all responsibility
and liability for the content of Computing.Net and its accuracy.
PLEASE READ THE FULL DISCLAIMER AND LEGAL TERMS BY