Windows 10: My microphone mute key doesn't work when pressed on my Alienware M15 R7

I have an Alienware M15 R7 and when I press the microphone mute key, it doesn't glow white, neither does it mute my microphone or unmute it when its glowing white. It shows no error message since its the microphone mute key, I want to use the microphone mute key since not all laptops have it. I have already tried updating my device on windows settings. I updated my drivers and hardware on supportassist, and none of it made pressing the microphone mute key work.

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Microphone doesn`t work

My microphone and ear-phone doesn`t work. Please help me, I have windows 7 home basic, my computer reproduces a sound, but devices no.

 

microphone mutes itself

When i go into properties the mike is muted. When I unmute it works for less than a minute then mutes again. The only suggestion I have found is set as default device which does not solve problem. I have also read it is a virus but I cannot solve with malware or virus scans. It first became a problem just a few weeks ago while skyping. Never had a problem with mike until then.

Troubleshooter finds the microphone muted and fixes, Within a minute the microphone mutes itself again.

 

My headphones microphone doesn´t work

I recently updated my Asus laptop to windows 10 and noticed that my microphone doesn´t work anymore. Before it was working well and after the update it started using my laptops own mic and in settings i cant change input to anything