Hi , it's not software issues it's hw, I got this too , WiFi chip issue, go to your sales or better to authorise Asus services and get it fix In warranty. I got new mainborad all fix in 3 days .
It is recommended that you refer to [Phone/Pad] What to do if my phone won't connect to a Wi-Fi network? first for troubleshooting the problem you might have.
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