Here’s the Answer to the Question posted on Facebook
Q. You are troubleshooting a laptop computer that has a dim LCD display. You are unable to adjust the brightness. Of the following choices, what is the MOST likely problem?
A. Failing LED backlight
B. Failing SSD
C. Failed inverter
D. The antenna is disconnected
Answer available until February 15, 2016.
See Chapter 8 of the CompTIA A+ Training Kit (ISBN 978-0735662681) by Darril Gibson.