White screen, startup chrime, USB not working

Hi guys,

I have a 2012 13in Macbook Air that on start up it has a white screen, makes chrime, it does not have a hard drive in it, the apple logo in the back does light up, and when closing it the screen turns off and on when opening it.

I've created a USB with Mountain Lion on it (using transmac on a windows) and the laptop does not respond at all to the USB (USB does not light up)

What do you guys think? It came without a hard drive(bought on craigslist guy lied to me) and since I can not get it to boot off USB is it the logic board? This is my first Mac repair so all help is greatly appreciated, thank you

Ответ на этот вопрос У меня та же проблема

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