Hi all, I've got a problem with my MacBook Air from 2011. I was working today on it when the screen suddenly went black. After that I am not able anymore to start it. The only thing that seems do work is the MagSafe indicator. The battery is now fully charged (as the indicator shows). When I tried to reset the SMC it worked as well (indicator went from orange to green after releasing the buttons). I tried also a SMC-Bypass, but it didn't worked. Does someone have another idea what I can try? I have to buy a screwdriver to open it and disconnect the battery. Thank you so much. EDIT: Now its making the startup chime and the monitor is turning grey for one second. After that its turning off immediately.