Windows 10: My microphone does not work properly on my laptop only, it works great on other devices

I recently got a new headset with good reviews for microphone quality. However, when I used it on my laptop, it sounded pretty bad. I then tried it on my brother's laptop, and on a PC at my school, and somehow the microphone quality is excellent. Does anyone know why it does not work on my laptop only? How can I fix it?Here is the sound quality on my laptop:https://1drv.ms/u/s!AtLwzIBAb6MzlmBuJp_Ahw9kpwEt?e=iZxU1RAnd here it is on my brother's laptop:https://1drv.ms/u/s!AtLwzIBAb6Mzll8nX1kUL3_xlF5b?e=zV063gThese recordings were both made on 'Sound Recorder', the pre-installed app on Windows 11

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Microphone not working properly after upgrade to 1803

After upgrade to 1803 my microphone is not working properly. I googeld and found many times this answer:

1. Hit Windows key and search for "microphone privacy settings"
2. Hit "Allow access to the microphone on this device"
3. Switch "Allow apps to access your microphone" to ON

Among the apps that are showing is Edge. There the mike is working, but on chrome and my games microphone is not working

 

Microphone not working

The microphone on my laptop stopped working. I have done a lot of trouble shooting without success. Before I conclude that it is a hardware problem, can I ask if there is anything else I should do.

My System:

• ASUS S500CA laptop
• Windows 10 Home X64 version 1909
• VIA HD Audio - (for speakers and microphone)

Here's what happened:

• The microphone was working perfectly (on Skype).
• The next day it didn't work on a Skype call

Here's is a brief summary of what I have done:

• The only thing that changed between these two Skype calls were a couple of Windows updates
• I tried to remove all the recent Windows updates - didn't fix it
• One update (4577670) couldn't be uninstalled so I restored the system to a date prior to the successful SKYPE - didn't work
• I ran the Win trouble shooter - it reported no problem
• I tried to update the sound/microphone driver - reported that I had the best driver
• Checked the driver version (Provider - Microsoft, Date - 2019-03-18, Version, 10.0.18362.1)
• Checked driver details (Report- No driver files are required or have been loaded for this device)
• Updated to the latest Win 10 version (20H2) - didn't help
• The speakers are working correctly.
• I tried all of the above with the internal microphone as well as an external microphone (I tested all microphone alternatives in the setup - headset, external other)

Is there anything else that I should try before giving up?

 

Microphone not working for any connected device

I tried stereo mix too and didn't work. No device with microphone works even though they get picked up as microphone sources

Realtek driver was uninstalled and re-installed but didn't resolve. This laptop doesn't require MaxxAudio according to the Dell downloads site: