MacBook Pro losing WiFi connection. Problem with AirPort Card

My MacBook Pro keeps losing Wifi connection. Sometimes it says no AirPort Card is installed. It has also been freezing, and the only solution is to hold the power button to turn it off. Then I have to restart the computer, but everything I was working on is lost.
Any ideas what is wrong or how to fix?

Sounds like your WiFi chip is going bad. Have you gotten it checked by an Apple Store rep ?
Have you deleted the contents of /Library/Preferences/SystemConfiguration, rebooted and tried ?

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Since this is a user to user forum with no employees participation, your plea is a good a screaming into the wilderness. I suggest that you post your thoughts here:
https://www.apple.com/feedback/

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Hi..
Try Resetting the System Management Controller (SMC)

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Hi Jackso,
Welcome to the Apple Support Communities!
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Have a great day,
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MacBook Pro losing WiFi connection. Problem with AirPort Card

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