To anyone having this problem that the macbook air 2013 won't start or even give lifesigns exept for the magsafe charger LED!
I tried reseting SMC.
Keep the lid a little open (thats what i did) and keep it in a firm grip to make sure you hold it.
THEN SHAKE IT LIKE YOU MEAN IT!
Then press the start button.
This will set of the SMS (sudden motion sensor), and in doing so, this solved my problem.
Now everything works like a charm!
Have a nice day everyone!
I have only owned this laptop for a couple of months
The good news is that is still under the one year limited warranty.
Startup your Mac in Safe Mode
A Safe Mode boot takes a longer than a normal boot so be patient.
Once you are in Safe Mode, click Restart from the Apple () menu.
If that doesn't help, see if you can access OS X Recovery.
Turn the Mac off, wait about ten seconds then startup while holding down the Command + R keys. Let go of the keys when you see the spinning progress indicator.
From there you should be able to access the utilities in recovery mode to verify and repair the disk if necesssary, or reinstal OS X.
Read before proceeding > OS X: About OS X Recovery
If you can't boot into recovery mode, contact Apple for instructions for sending in your Mac for service > Contact Us - Apple Store
Did you try OS X Recovery as I suggested previously ?????
If you heard a chime, then the Mac is powered up, it's just not passing it's startup diagnostics test.
Try here also > Apple Portables: Troubleshooting MagSafe adapters
Thermal sensors not working properly, probably.
Only Apple store can diagnose it correctly.
Here is an article from Apple about this issue.
Note: Steps 5 and 6
Did your MBA continue to work after it came back on? Mine did the same about two weeks ago (I've not had it longer than a month), and I was thrilled after a few days it magically powered up after nearly a week of nothing. But a few days ago it died and won't power up again. Light has changed from orange to green, tried every reboot I can find, called Apple, etc. I'm taking it in tomorrow, so I guess I'm just curious about what to expect. This seems to be a frequent occurrence among Air owners, from what I've read online...
Mine is doing. I had a MBA from 2010 that died this year. But it never had this problem. If it's happening to everyone that mean the product is defective . Apple needs to recall and extent people warranty on it. I don't think it's right for us to be stuck with brand new computer that just turns on and off whenever it pleased. This seems to be a known issue for this model and apple needs to fix it!