How to adjust the screen brighteness and contrast

I programmed a media player.
I want to adjust the brightness and contrast in the screen of movie.
How can I do it?
Thank you

programmed a media player how? JMF? There are filters or processors you could put in the chain to do whatever to the media

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Adjusting screen brightness and contrast on Satellite L550-113

I am a visually impaired user and I'm thinking of purchasing the Satellite L550-113, but before I do that I need to be sure that the screen brightness/contrast can be adjusted very easily, preferably via hardware controls as opposed to via the control panel. I also need to be sure that one can make the screen quite dull (i.e. too dull for a non-disabled user).
Could anyone give advice on how to adjust the screen contrast and brightness on the Toshiba L550-113? Also, does the screen have a glossy or matt finish?
Any general information on the quality and ease of use of the screen will be extremely useful and highly appreciated! Thank you.

Hi mate!
Yes, the screen brightness can easily adjust via FN keys. You have to press FN+F7 to increase the screen brightness and FN+F6 to reduce the screen brightness. Furthermore in Vista power management you can also adjust the screen brightness and save the settings for different power profiles and on batter or on power mode.
As far as I know Satellite L550 has a gloss finish screen as other Satellite notebooks.
I hope I could help you a little bit! :)

How to change the screen brightness on a macbook?

How to change the screen brightness on a macbook?
My Macbook is a May 2010 model in white
I am looking how to change the brightness using the keyboard, because I know how to change it using System Pres

The F1 and F2 keys control brightness. Depending on how you have your function keys set up, you may have to also hold down the fn key to activate.

The Best Brightness and contrast for my monitor

I have an acer monitor AL2016W. I managed to get it too work but the screen is too bright. What is the best brightness and contrast for it? I have a resolution of 1850 x 1250, can I safely change that on my mac mini? Thank you for yuor help.

If you are using windows 8 - go to the start screen and just start typing Power.
When you start typing in, "Just Type" kicks in and starts searching for what you are typing, The default is to look for applications, but the power options you need are under settings.
So Click on Settings, and you'll see power options on the left.
Click Power Options and once you get to there, you should see a slider on the bottom of the window to change the brightness, I added a screen shot for you.
good luck
bill
I'm a HP employee
Attachments:
power options Brightness.PNG ‏97 KB

How to adjust the green (starting) and the red (end) rectangles pixel by pixel (top, bottom, left and right) by changing the number of pixels in ken burns.

How to adjust the green (starting) and the red (end) rectangles pixel by pixel (top, bottom, left and right) by changing the number of pixels in ken burns. Help please.

If you look closely at the top of the canvas pane, as you move either of the boxes (green or red) there is an indication of pixel positions... "top, bottom, left, right," and "scale."
Admittedly, it doesn't seem as if you can "enter" the dimensions with your keyboard, however, as you move the boxes, you have a real time indication of the boxs' locations.
(I couldn't take a screen shot, as you have to actively move the box with a mouse or other input device... thus, I could not also take a screen shot with same device.)
I hope this helps.

My 2009 iMac is making a very loud,rapid pulsating electronic noise. It stops temporarily after adjusting the screen brightness or using certain apps. But it always returns

My 2009 iMac is making a very loud noise. It sounds like a rapid, pulsating electronic noise. It stops when the screen brightness is adjusted or when using certain apps. But it always returns and is getting louder. The unit was shut down for 4 months and the house temperature was set to 5C. It was powered up 2 weeks ago and ran fine for a while. Then in the last 5 or 6 days the problem started. 5 days ago I did watch a bike race for 3 or 4 hours from a quasi legal stream. I am not tech savvy. Just very confused as I've had a trouble free run so far. Ditto with my iphone5.

I would recommend taking it in immediately to your local Apple Store or AASP to be loooked at by an Apple Genius. I suspect you made a goof somewhere but diagnosing noises without seeing it is really difficult.

How do I make screen brighter and the sound quality better with W8 OS on my iMac through bootcamp assistant like it is with my mac os ?

How do I fix my screen brightness on my imac via W8 OS on my Imac through boot camp assistant and How do I fix the quality of the sound coming from my imac when in w8?

Alright, first off, thank you for your help so far. I really appreciate it. However, now I have a new problem that I need help with.
I did exactly what you've said to do, and it worked fine, the screen itself became brighter again, it was just too dim before and the brightness settings were all the way up, but after doing what you said to do, It's as it is when using my Apple/Mac OS. The sound coming from the computer speakers and all the other audio issues have been fixed as well. It all sounds like it should in terms of quality. It's just now that I did that, I'll shutdown my computer, or even restart it for some reason, and each and every single time I do that, It's all back to the way it was before installing anything, dim and poor audio quality. Until I install the drivers again like before.
Am I going to have to get used to that or something? Or is there an option I'm just not seeing that would make these preferences and instalations permanent until I input/imply otherwise??
Thanks in advance!!

Why do I get a loud hum when adjusting the screen brightness?

I am getting an annoying Hum and the loudness depends on the how bright I have the screen, as I turn it down the hum becomes quieter. This is super distracting as I like to run my sound through external speakers, but the hum is just enhanced. I brough my unit it for service, they sent it out and said nothing was wrong with it.... Any ideas? None of my other computers make this hum!

Sounds like the inverter, which powers the screen is going bad. I'd bring it back.

How much does the screen brightness matter?

I love my new Macbook, especially the beautiful screen. I find myself worrying about battery life, even though I know I shouldn't. I keep the screen at half brightness on battery, and 3 settings higher when it's plugged in. It looks nice, but I'd love to run the book on full brightness. How much does this affect the battery? Will half brightness really save me 20...30...40 minutes? Has anyone run any tests to see battery life at different brightness settings?
Macbook 2ghz, The White Kind... Mac OS X (10.4.6)

Yes, one of the biggest consumers of power within your MacBook is the display. Why don't you find out for yourself what sort of differnce it makes given that experiences do differ. If you prefer to use your display at full brightness then do so. It is yours!

The display on my screen has become too big. I've tried adjusting the screen size and the zoom isn't set. Can anyone help?

I have an iMAC 7.1 running OS X 10.6.8.
The display has become too big for the screen. I've looked at the zoom and it is turned off. I've tried adjusting the pixel setting (currently 1920 * 1200) to no effect.
The bar at the top of the screen is elongated, and I can't see the time in the top right hand corner.
This is affecting everything I lookmat, the dock in the bottom doesn't show until I bring the mouse down (hide dock is off).
I have no idea what caused this and I can't fix it.
Does anyone have idea what the problem is and how to fix it?
ANy help would be greatly appreciated.
Thanks.

No wheel, it's a magic mouse.
Tried safe start. No difference.
The dock and the icons are off the bottom of the screen.
I I have finder open and move the cursor to the right to show the time, I lose finder / file /edit from the overhead banner.
Still no closer to solving it.

MacBook Pro I need to know how to adjust the screen?

Can someone please help me in figuring out how to get my screen back to normal size. I don't know what I did to get it like this. It does not cover the entire screen. The only way I can get it some bigger is to move it to the upper far left corner and then drag it down to right. My icons are still on the bottom of my screen and the menu bar is still showing on top. This is when I use Safari. I can get a full screen using google but I have to click the arrows in enlarge it each time I long on. It has not alway been this way. I did something to change it and cannot figure out what I did or how to get it corrected. PLEASE HELP!

Save As… has returned with Mountain Lion. Hold down the Option/alt key while clicking on the File menu & there it is! It also has a default keyboard shortcut.

How to adjust the display brightness on the Nokia ...

I havent found any settings to adjust the brighness of the display in my new Nokia 2710. But the manual says that i should reduce the brightness if i wanted to save battery power. Did i miss something? I think its just not implemented! Thats very disappointing, since the dispaly is too bright to use it as a navigation device at night in the car. I hope Nokia will come up with a fix for that soon.

dont think this can be adjusted on this model
If i have helped at all a click on the white star below would be nice thanks.
Now using the Lumia 1520

W540 Cant adjust the screen brightness

I have a W540 with 3K Ips panel and Windows 7 Pro 64bit.
I recently installed a new hard drive and installed windows 7 pro 64 (previously on the other hard drive was Windows 8.1 Pro 64 bit ( there I could change the brightness ) )
My problem is that I can not change the brightness .
I've already tried:
-Reinstalled all NVIDIA driver
-Reinstalled all Intel graphic drivers new
-Reinstalld Intel and Nvidia drivers simultaneously
-Remove Lenovo Power managment
-Tried to install NVIDIA driver from the Lenovo and the Nvidia page
-Reinstalled Windows
Can someone help me?
Sorry for my bad englisch
Solved!
Go to Solution.

Go to http://support.lenovo.com/us/en/products/laptops-and-netbooks/thinkpad-w-series-laptops/thinkpad-w54...
Run the downloaded executable/installer.
Then when the installation files have been extracted, just uncheck the checkbox that asks you if you want to run the installer right now. We want to install the Intel driver manually, because the installer made by Lenovo doesn't overwrite the already installed Intel HD Graphics driver if it is newer than the one you are trying to install.
You will find the extracted setup files by default at: C:\DRIVERS\WIN\VIDEO\
The driver you need is located here: C:\DRIVERS\WIN\VIDEO\INTEL
Run setup.exe in the Intel folder to install the Intel HD Graphics driver manually. If it notifies you that you already have a newer driver installed, just continue the installation.
Jonas
Microsoft MVP: Windows Consumer Expert
Yoga Tablet 2 10 || ThinkPad X1 Carbon (20A7007MPH) || ThinkPad Helix (3698-6EU) || IdeaCentre B540
Twitter: @jonashendrickx

Hp pro 4300 all in one pc - the brightness increase/decrease button to adjust the screen

Dear all ,
I have bought a new PC, It's Hp Pro 4300 all in one PC. I already installed all driver which public on Hp website correctly. However I can not use the brightness increase/decrease button .
Could you please help me to solve this problem?
thank you very much and look forward to hearing from you.

Hello novacom,
Welcome to the HP Forums, I hope you enjoy your experience! To help you get the most out of the HP Forums I would like to direct your attention to the HP Forums Guide First Time Here? Learn How to Post and More.
I understand you are having issues with you Hp Pro 4300 and adjusting the screen brightness using the button on your keyboard. I am sorry, but to get your issue more exposure, I would suggest posting it in the commercial forums, since this is a commercial product. You can do this at Business PCs - Compaq, Elite, Pro.
I hope this helps. Thank you for posting on the HP Forums. Have a great day!
Please click the "Thumbs Up" on the bottom right of this post to say thank you if you appreciate the support I provide!
Also be sure to mark my post as “Accept as Solution" if you feel my post solved your issue, it will help others who face the same challenge find the same solution.
Dunidar
I work on behalf of HP
Find out a bit more about me by checking out my profile!
"Customers don’t expect you to be perfect. They do expect you to fix things when they go wrong." ~ Donald Porter

The brightness and contrast key not working

I ve 15r-260ne modle hp laptop.. i resently got it .. but the brightness and contrast key is not working ... i cant make the screen bright and dim ..

Hi Please find the ink given below might help you to fix your issue. http://support.hp.com/in-en/document/c00832191

How to adjust the screen brighteness and contrast

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