I have a NP470RSE- K01UB that has been upgraded to Windows 8.1 and I am having display brightness issues. I have all the Windows power settings set to max brightness regardless of whether the computer is plugged in or on batteries. However, when I use it on battery, the display is about half brightness or less.. If I plug the power cord in, I have to restart the computer to get the display bright again. Is there a Samsung setting on here that I am not aware of?
SOURCE: Acer Aspire 5735 LCD changes bight-dim-bright, etc.
You could have a faulty inverter, To determine if you have a LCD screen, inverter or video card problem, read this and follow these instructions.
Defective CCFL backlight, it may have the following symptom: Screen flashs on red/pink and off. Picture stays on in red and slowly be come normal. Picture flickering with dim display or appear black. Picture flickering on and off. All these symptoms indicate that the LCD backlight lamp (CCFL Lamp) has reached the end of the life and all you need to do is replacing the CCFL lamp.
Connect an external monitor to your laptop and power the monitor up first then the laptop, if you see the normal Windows images then the video card and laptop is OK and the problem is definitely the backlight. Dim image and/or dark display on the laptop's LCD screen indicates a faulty LCD backlight and it could be the inverter that supplies high voltage to the CCFL lamp or it is the CCLF lamp is nearly burnt out or burnt out, most likely this is the case.
The inverter can be replaced easily but the CCLF lamp is more time consuming and requires soldering skills.
Check out
www.lcdparts.net
for parts, repair service and DIY info.
SOURCE: Model: Lenovo Thinkpad T400 Issue: 1.
sound like you may have a bad battery charge board but let us pray that it is a separate baord that plugs into the mother board
SOURCE: Monitor Brightness problem
it is still on warranty... check on service ... or you can try to download drivers .. or new chipset for your laptop..
or on startup hit f and chose last known good configuration thaht worked.
SOURCE: The screen brightness changes due to plug in or battery power
This is quite common actually I see it a lot. There really isn't any reason, it seems that when on batteries it trys to save power by Dimming Down, but it often just mucks up.. I always now set it via the keyboard keys. whenever I change from power adapter, to battery.
SOURCE: My laptops brightness is too
go into battery power option bottom of your desktop and its available to be set on user prefs there i hope its that simple for u :)
Adjust your monitor's brightness and contrast
You can adjust the brightness and contrast of your monitor to improve the readability of text and to make digital pictures appear more like they'll look when printed.
To improve the results when adjusting the brightness and contrast settings for your display, use Display Color Calibration. (Display Color Calibration helps you adjust these color settings and others.)
The way you adjust brightness and contrast varies and depends on your specific display.
Brightness and contrast buttons on the front of the monitor.
Some monitors have brightness and contrast controls on the front and use the standard symbols shown in the following image.
Brightness and contrast symbols
On-screen menu. You can change the brightness and contrast settings for some displays by using an on-screen menu, and then setting the brightness and contrast in the resulting menu. Many times, you can view the on-screen menu by pressing a button-possibly labeled Menu-on the front of the monitor.
Laptop display. Laptop displays don't have brightness or contrast buttons on the front.
For a majority of laptops, there isn't a control for setting the contrast.
However, you can set the brightness of many laptops by pressing and holding the Fn key, and then pressing a function key to decrease brightness ( ) or increase brightness ( ).
http://windows.microsoft.com/en-US/windows7/Calibrate-your-display#
When using Display Color Calibration on a laptop, set the display to the maximum brightness setting.
Adjusting brightness automatically using adaptive brightness
Adaptive brightness is a feature in Windows that uses a light sensor to automatically adjust the display brightness to match the lighting conditions in your computer's surroundings.
To use adaptive brightness, you must have light sensors installed and enabled on your computer.
To determine if your laptop or computer monitor supports adaptive brightness, look for the Enable adaptive brightness setting in Power Options (mentioned in the following procedure) or check the information that came with your computer.
To turn adaptive brightness on or off
Open Power Options by clicking the Start button , clicking Control Panel, clicking System and Security, and then clicking Power Options.
Under any plan, click Change plan settings.
Click Change advanced power settings.
In the list, expand Display, and then expand Enable adaptive brightness.
To turn adaptive brightness on or off when your computer is running on battery power, click On battery, and then, in the list, click On or Off.
To turn adaptive brightness on or off when your computer is plugged into an outlet, click Plugged in, and then, in the list, click On or Off.
Click Apply. Click OK.
hope this helps
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