Q: Mac book Air Logic board failure

Please call Apple Care. As it is a hardware problem, they might create an exception for the case.

(To find phone numbers, click here: Contact Apple for support and service - Apple Support)

Genius Bar diagnosis is free - make reservation first > Genius Bar - Apple Store - Apple

Have you tried a SMC reset?

https://support.apple.com/en-us/HT201295

Ciao.

Get this, my SECOND Mac is now in the "shop" for a logic board replacement.  No kidding.  Second time, second machine, in under 2  years.  MacBook Air.  MacBook Pro.  Both logic boards fried.  Tried everything (including everything that's listed as suggestions here).  Nothing worked.  Took it in, the tech tried everything, major diagnostics, etc. and low and behold, it needs a new logic board.  Like you, I will never ever again ever recommend a Mac product to anyone.  This is a prevalent problem, we all know it, Mac knows it and Mac should acknowledge it and offer solutions.  You see this problem discussed everywhere on pertinent sites on  the internet, and, in so many forums.  Mac (I just called them) is not acknowledging this problem.  I'm done.  As soon as I'm able, I'm going back to PC's.  Same problems but the initial outlay of capital is a fraction what it is to purchase a new Mac.  I can no longer run my business on a Mac-based platform and will absolutely go out of my way to discourage anyone from EVER purchasing a Mac product.  It's just no longer worth it.  And seriously, Mac Person who's making recommendations here?  Don't even go there.  EVERYTHING you can possibly suggest was tried by myself and then by TWO technicians - TWICE.  You need to unilaterally fix this problem.  Now.

Re: Macbook Air Logic Board Failure  <--This link is to another post that discusses the same problem. It contains useful information.