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- Are Secure Boot and Fast Boot in BIOS disabled?
- If Windows is still installed: Is Fast Start-Up in Windows disabled?
- Did You take a Look in the ''Additional Drivers'' Tab if there is a Driver offered?
- Could You post the Output of the Terminal Commands
sudo lshw -C networkandrfkill listplease? - Maybe something from here could help:
Mediatek mt7921 - #6 by zabadabadoo