A customer states their laptop screen is very dim. In order to avoid going to the client site, which of
the following is the FIRST action the customer should perform?

A.
Increase the resolution

B.
Use function keys

C.
Reboot the laptop

D.
Go to the Power Options in Control Panel

Explanation:
http://www.tomshardware.com/forum/70976-35-laptop-screen-visible