Windows 10: Video/Audio keeps pausing and playing by itself on my windows 10 Dell desktop

I have a Dell Inspiron 15 3000 series laptop on which Windows 10 OS is installed. My laptop has been facing an issue lately where I can't seem to enjoy a video peacefully. It keeps getting interrupted by the system playing and pausing it continuously. It exists on all types of players. Web browsers, you tube videos, VLC media player, and so on. It even doesn't let me enjoy audio song as it keeps on pausing and playing. I can see the Pausing and playing effect being reflected as the f10 display action is displayed on my screen continuously. I have tried to reinstall my windows and update my dr

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Video/Audio keeps pausing and playing by itself on my windows 10

Video/Audio keeps pausing and playing by itself on my windows 10

I did all updates and troubleshooting.

My problem is not solved yet.

Please help me

 

Audio & video Play Pause automatically

Audio and video pause automatically (and sometimes pause and play) only when I use an internal (YouTube, google) or 3rd party software (windows media player, VLC, films &TVs ).
1. It happens only when I am playing a video or audio.
2. No virus (after scan)
3. Since the space bar key is usually associated with play & pause, I tried typing something in MS word. I did not see any auto space being generated between 2 letters. (tested for 5 mins)
4. Auto play and pause (sometimes just pause) occur maybe after 20 seconds. (it is random)
5. I can actually see the virtual pause and play button is toggled. (no other error message is shown, it happens as if I am physically pressing the space bar key.
6. issues in Windows 10

7. the window also very lag when it happening