P/S: laptop dim by itself>>>I think this one is not a problem, in fact, it is set by default in power option (plan setting)

power options>balanced/power saving/high performance>change plan setting>dim the display

Haha, even the user dont do anything, default BALANCED setting is 2 mins for battery and 5 mins for plug in, 40% brightness cut for both.

If he purposely dim then he would not complain to MSI, unless  he really dont know this one, just turn on and use. I wonder he know the settings or not 

OR the case is display dims regardless of what settings there, but seems impossible, bcs power setting is reliable in windows.

Nevertheless, we dont know the actual situation, this is based on our assumptions. I really hope users have some level of understanding on their laptop situation then claim warranty, not just claim blindly.
P/S: If the actual case is like what we say, MSI technician or workers should be aware of this.................

if it is not hardware fault, then I should get back my laptop long time back. It not my responsibility to check whether is a hardware or software fault. Hence I send it to their service center. Anyway, they confirm.is a hardware fault. It is just the warranty procedure suck big time. As I already mention in my first post. Stock checking have nothing to do with maintaining a customers' s laptop or pc. If ur laptop or pc is ok now, then is good, but if u have problem, u might end up like my case. Maybe mine is an isolated case but if it happen on u or u friend, u will definitely feel the pinch.

i dont think this is the hardware's fault. have you done any settings before sending in for warranty?

But I disagree of his reply that "It not my responsibility to check whether is a hardware or software fault."

"It not my responsibility to check my health" >>reply him with this one, haha

HAHA, lets see, by the way, let him solve his business by himself, eventually MSI will look into this case seriously.

have you done any settings before sending in for warranty?

By the way, sorry for ignoring ur question. Pls be specific on the setting part. What do u menan by done any setting?

2nd : Pls read my post, they confirm is an hardware problem. And by the way, we as consumer paid for the machine and it is still under warrary. If ur body have problem, will check it yourself or u go visit a doctor. Pls think about this.

3rd : Raymond Tong, you are a laptop recommender?advisor,First of all, i dun think this particular model have ambient light sensor... As i try to enlighten u many time in my previous past, that, they confirm is a hardware problem, i really do not know why we still continue in this conversation... if really is a setting problem, do you think the service center or MSI need more than 2 weeks to reset the laptop setting? If they do really need 2 weeks to reset the problem, then i think this is another issue altogether for future MSI laptop buyer?