Wifi adapter not found

Try using lts kernel first,

sudo pacman -S linux-lts linux-lts-headers

choose the lts kernel from grub advanced menu while booting. If it doesn’t help
Use forum search next,

If your problem is different from the issues in the threads on forum or you have already tried all possible solutions mentioned in these threads. Then please inform us of what you have already tried and how your issue differs from the one in the thread.

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