Laptop screen brightness

I was in a meeting room with the Boss. During the course of the discussion, I told him that instead of giving verbal explaination it would be better if I can show a demo. He handed over me his laptop and pulled a chair besides me.
I connected to my machine via Remote desktop and started showing him a demo of our new project. After 2 mins I noticed that he is not able to grasp the idea, here is the conversation

Dilbert: Boss what happened.. is there any problem?
Boss: Yes.. actually I am not able to see the items clearly.
Dilbert: (Angled the laptop towards the boss) Is it okay now?
Boss: No actually there is a lot of glare from the window I am not able to see the screen clearly
Dilbert: Ok then lets sit facing the wall instead of the window so that there is no glare
Boss: Well actually हमारे बच्चे ने उस दिन कुछ keys दबाये | उस टाइम से ये screen एकदम काला हो गया है हें |
Dilbert: मतलब ?
Boss: ये देखो ना सब काला काला दिखता है
Dilbert: (Ohhh ! so you you don't know how to increase the screen brightness??? !!!) Ok wait a sec
Dilbert: (Fn+Home to increase brightness) Ok does it look bright now ?
Boss: Waaw !

My boss was working with a dull screen for a lot of days b'ca he didn't know how to increase the screen brightness !!!