Q: My MacBook Air keyboard stopped working (keys 8, i, ',' and right and left arrows.

Hello crushzwei,

I'm sorry to hear you are having these issues with your MacBook Air. If you continue to have issues with certain keys on the built-in keyboard, you may find the information and troubleshooting steps outlined in the following article helpful:

One or more keys on the keyboard do not respond - Apple Support

Regards

Hi crushzwei 

Thank you for using the Apple Support Communities; I'm sorry to hear you are still having this issue. If you have gone through the above linked article completely without reaching a resolution or a direction for further troubleshooting, you may be better served by reaching out to one of Apple's other available resources for more direct assistance - https://getsupport.apple.com/GetproductgroupList.action

Regards