My Gateway notebook thinks that the Fn key is pressed when it is not, and it thinks the Fn key is not pressed when it is.Take the “k” key ,for example.This key also has a blue colored “2” on it, meaning I am supposed to get a “2” if I hold down the Fn key.Just the opposite occurs.If I do not hold down the Fn key, I get a “2”.If I do hold down the Fn key, I get a “k”.The fact that pressing or not pressing the Fn key changes the behavior of the “k” key, makes me think the Fn key is not stuck.It also does not look or feel stuck.
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Look on your keyboard on the "f" keys (f1, f2, etc...) for a symbol that looks like a sun or shining light. Something that would indicate brightness. Now, hold down the 'fn' (function) key on the bottom left of your keyboard and then press the backlight key you just found.
It is possible that the signal from the portable is not compatible with your convertor or device, however, if you are getting no image at all (not even lines etc.) then the laptop may not be set to send a signal through the VGA port at all. To toggle the image to the VGA port do the following
Press and hold the FN key on your keyboard
While holding the FN key, press the F3 key one time
Let go of the FN key
Wait a few seconds to see if you get anything thing on your external device.
If you do not then press FN-F3 a couple more time waiting a few second in between each try.
the Fn-F3 toggle switched between the LCD only, LCD+CRT, and CRT only modes. You may find that it works on the CRT only mode but does not work correctlly with both. When this occurs it's a limitation between the compatibility of the settings requires for both screens, so you would only be able to use each by themselves not together.
Have you tried pressing Number Lock? The key may be labeled "Num Lock". If the Number Lock key is labeled with a different color than the letter keys, you may have to hold the corresponding colored key (like Fn or something) while pressing the Num Lock key.
1. Check Power ( this includes the power supply )
2. Check Battery
3. Check to see that the DC power jack is not loose or broken.
4. Most notebook/laptops have a function key FN when the FN key is pressed you will be able to press the F keys , one of them will have a little monitor drawing on it.
if you press them both FN+F-Key ..... which could be F5 in this case , it will cause the computer to switch to either the VGA output , or the notebook/laptops screen. sometimes they get pressed by mistake and the person thinks they have a broken machine when in reality they do not.