A solution that worked for me:
Similar to the original issue, my laptops WiFi card was also disappearing from the system, and a day later even the Bluetooth was not working.
I have tried all the mentioned techniques and steps and none of them worked, my WiFi adapter was still disappearing from the system.
I consulted a store and they asked me to reinstall or factory reset the laptop.
All you need to do is hard reset the system with keeping all the files.
By doing so, you will only reinstall the operation system keeping all the other files and drives intact.
Steps:
- Restart the laptop and press the F9 key to enter the troubleshoot menu at start up (only from Asus Laptops or what you can do is, on the log in screen click on the power button at bottom left, and then click Shift + Restart to open that menu
- Next, click on Troubleshooting
- Then click on Reset this PC
- Now if you want to keep all your files select "Keep My Files", which I did, or you could select "Remove all the files" which will remove all the user files from the C drive only, any other drives present will not be affected.
- Next click on Local Reinstall and then click the Reset option.
After doing this, wait for the laptop to reset, it would take about 5 to 10 mins, and then the laptop will start again
So far, I haven't faced any issue yet.
Hope this helps you.