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.
go into the BIOS settings and tell it to use the LCD/Monitor as a display.
press fn key+(F5 or F7 or F8) 1x or 2x or 3x.....
Fn key combination. The Fn key is located
at the lower left of the keyboard, normally between the CTRL and the ALT
key. Toshiba uses Fn-F5 to toggle between the laptop LCD and an external
display. IBM or Lenovo uses FN-F7, Acer varies with the model, using Fn-F5,
Fn-F3, Fn-F8, Sony Fn-F7, Dell Fn-F8, HP or Compaq, Fn-F4. There are variations
with the age of the laptop and not all manufacturers have standardized on
a key combo across the whole range, but you can usually figure it out from
the little graphics on the function keys that line the top of the keyboard.
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..
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)
On most laptops there is a function on either the"f7"or"f6" key at the top of the keyboard.These functions allow you to toggle your screen to an outside monitor or projector. This may or may not be the problem so let's try it. Hold the blue "FN" key in the lower left corner of the keyboard down while you try all the function keyes at the top and see if this solves it if it does not let me know and we can look in too it further.. Take care..Mark