How to get keyboard switches working in Windows10

S400

New member
Have just upgraded my PCSpecialist Laptop from Windows 7 to Windows 10.
Now two of my three keyboard switches don't do anything ....
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This is a picture of the three switches in the top left corner of the keyboard.
Keyboard Switches.jpg
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The middle switch (speaker switch) does still work.
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The bottom switch (WiFi On/Off) now does not work any more --> How can I get this working again?
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I have no idea what the the top switch is supposed to do (the icon on it is meaningless !).
It doesn't seem to do anything at all that I can detect now. --> Can someone please tell me what it is supposed to do? AND how to manage it / get it working?
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Many thanks in advance.
 
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