Hello Jaffeds, Sorry to answer u by this news : this problem u have happening by 2 cases .. 1st Case :::: that's maybe ur screen lamps is broken ..so u can see the data but very dark or no Back-light .. so u will need to replace the screen..or advanced option but with expret person to change the lamps from another broken sceen,, 2nd Case ::::: The high-voltage board..it's small board built below the screen to give the screen the right voltage to light on .. so u will need to replace it also ..or Advanced option also but with expert electronic person to check it ..
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Pressing and holding the function key (abbreviated as "Fn") and pressing the up, or down arrow keys increases and decreases the brightness. You can also press Fn and F1 and F2 or F7 and F8 to increase and decrease the brightness. Immediate results should be seen on the screen making your screen darker or brighter.
Hello sounds like your trying to figure out how to brighten your screen. If so, try looking on your keyboard and see if You have specialty function keys. These are usually right on top of your number keys. On mine Its function keys f7 and f8. Just like typing a capital letter except you have to hold the Fn key, usually found in lower left had side of keyboard. Hold down and press function key that shows a sun Up F8 on mine and see if that brightens screen. You might have to press a few time to brighten.
Hope this Helps
Decrease Brightness (fn+f7) The fn+f7 hotkey decreases the brightness of the notebook screen. The longer you hold down the fn+f7 hotkey, the more the screen dims. Decreasing screen brightness conserves power.» To increase screen brightness, press the fn+f8hotkey.
Increase Brightness (fn+f8)The fn+f8 hotkey increases the brightness of the notebook screen. The longer you hold down the fn+f8 hotkey, the more the screen brightens.» To decrease screen brightness, press the fn+f7hotkey.
there must be an function key on your keyboard.....and several symbols on other keys ...with same colour may be...if you press function(fn)key + the key on which symbol is made the same task is done....for example a key on your keyboard has a crescent moon type symbol...if you use it with function key..your lappy will hibernate...some other keys may be for brigthness of your screen ,increasing and decreasing sound etc..
it may happen that your extetnal (VGA Display) is enabled, this will disable your LCD Display.
just press Fn key and look function keys where monitor symbol is drawn ( that is F7 or F8 key. (turn on laptop then press Fn + F8/F7)
Actually it's the F5 key which also has a symbol of the sun on it and arrow pointing upward. Press the blue Fn key located at the bottom row, 2nd from the left and the F5 key together to increase brightness or the F4 key to decrease the brightness (it has an arrow pointing downward). Easy, eh?
Compaq says to DECREASE the screen brightness for your specific model, use the fn key in combination with the F7 key (basically, hold down the fn key and press and release the F7 key). That most likely means that the Function key to INCREASE the screen brightness is usually on one side or the other (F6 or F8). Also, look for what the other User suggested; the function key should have a picture of a sun or sunburst. Hope this helps.
Keith Stoffer Comptia A+ Certified Technician (20+ years)