Cannot charge macbook air.

first time encounter that i plug in my macbook air to charge and the amber/green light doesn't come on, and my macbook doesn't charge. How can I resolve this issue?

Press the option key down and click the battery icon in the menu bar.
If the condition is "Normal", reset SMC.
Reset SMC. http://support.apple.com/kb/HT3964
Choose the method for:
"Resetting SMC on portables with a battery you should not remove on your own".
If this does not help, you may have to take the computer to the Apple store to have it checked out.
Best.

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I've a one year old MacBook Air, 2012 Medio 11" 1.7ghz Intel Core 5, 4GB ram, Intel Graphics 4000 - and Mountoun Lion installed.
The problem is, that its awfully slow. It startet last week, where I bootet up normally, and saw the Battery didnt't charged (x as battery indicator). And even worse the general state of the machine is VERY slow. Everything is working with severe lagging - even just typing in Safari browser... like you type GOOGLE.COM and it enters it after nearly 20 sec.
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Make a "Genius" appointment at an Apple Store, or go to another authorized service center.
Back up all data on the internal drive(s) before you hand over your computer to anyone. If privacy is a concern, erase the data partition(s) with the option to write zeros* (do this only if you have at least two complete, independent backups, and you know how to restore to an empty drive from any of them.) Don’t erase the recovery partition, if present.
Keeping your confidential data secure during hardware repair
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I'm having a Macbook Air with 128GB SSD and 4GB RAM with OS X Mavericks. I was using my Mac normally but suddenly chrome got stuck. So I held down the power button and shut down the Mac. When I switched my Mac on again, it wont start.
I tried to repair my SSD using diskutility from Recovery Partition. But it says something is wrong with my Partition Map and that I have to erase and reinstall OS X. But I cannot erase my SSD. The progress bar gets stuck at 50%.
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Fore More info:
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Quote from below linked article from Apple
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