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I have an Asus Windows 8 computer. Very strange, whenever I remove the power cord, the screen dims immediately. And very dim. The battery lasts for five hours -- but not much use if the screen is so dim!

I checked the power settings. It doesn't show such a setting that immediately it should dim. Maybe after 10 minutes!

I changed the setting to 20 minutes, but no change.....

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    I think your laptop lcd inverter may be on its way out... The display settings won't take the screen really dim (almost to the point you can't see anything). If you can barely see anything then there is a hardware fault; mostly the inverter.
    – Kinnectus
    Aug 11, 2014 at 7:34

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I finally understand my problem:

My problem: I had tried using function keys to change the screen brightness -- but without success. So then I had tried changing the power settings for the computer. I set that when the computer is on battery -- it should only dim after 10 minutes. But the computer would still dim immediately when beginning battery power!

My solution: I misunderstood my function keys. I was using keys which change the brightness of lights which are under the keys of my keyboard. So now that I found the right function keys, I can adjust the brightness of the screen.

Those function keys also change the setting of screen brightness in my current power plan.

I guess the setting of dim after 10 minutes in the power plans is some other additional dimming of the screen.

THANK YOU for all who responded!

Avrohom

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