MacBook Air won't turn on after repairing permissions

Hi everyone!
I tried to update the software on my new MacBook Air; the updates started downloading and then it stopped because of a network problem. For some reason, my network wouldn't accept it so I thought *checking the permissions*; I asked for a repair, had the time briefly to see the long list of incompatibilities and then, bof, the Mac turned off, as simply as that. I did everything the Troubleshooting page suggested here:
+Press the control key, the command key, and the power button simultaneously and hold for three seconds to try to restart the computer.+
+Reset the PRAM. After pressing the power button, hold down these keys simultaneously: Command-Option-P-R, until you hear the startup chime at least one additional time after the initial startup chime.+
+On the MacBook Air, press (left) Shift-Control-Option along with the power button once. Note: You must use the keys on the left side of the MacBook Air keyboard.+
the only thing I can say is that at times I could hear the fan turning, but although I pressed the luminosity & sound buttons nothing changed.
I wonder if it's a software problem.
I am frustrated as ****, especially as in my country I don't trust anybody to get close to it
Any suggestions pleeeeeeease?
Thank you!

Hi Guys,
I'm having the same issue with my MBA. Basically, I press the power button, the SIL light flashes once for about 5 seconds, then goes off, then comes back on and I can hear the fans spin up (I have removed the back cover to confirm this). The screen stays black, the keyboard doesn't show any signs of life and the SIL light just sits there. I've tried the usual SMC, PRAM reset, all to no avail. Thought that maybe it could be a POST or boot ROM failure... Any ideas?
Thanks,
Mark J

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http://support.apple.com/kb/ht3964
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See this article:
http://support.apple.com/kb/ht3964
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Plug in the MagSafe power adapter to a power source, connecting it to the Mac if its not already connected.
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http://www.apple.com/support/contact/
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MacBook Air won't turn on after repairing permissions

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