Cannot power on MacBook Air 13"
Upon pressing the power key, no chime, no fan
black screen
MacBook Air late 2010
MacBook Air, iOS 10.1.1, Processor 1.86 GHz Intel Core 2 Duo
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Best reply
Try an SMC reset:
https://support.apple.com/en-us/HT201295
Try starting up in Safe Mode:
Use safe mode to isolate issues with your Mac - Apple Support
If neither of those work boot into Recovery and Reinstall Mac OS.
About macOS Recovery - Apple Support
If none of those work make a Genius Bar appointment for a free diagnostic: