MacBook Pro Won't Turn on/Boot up? Here's how to fix it

Lot of Mac users reported this issue. Suddenly MacBook Pro won’t startup. When users connect their mobile Usb to macBook Pro it shut off. When plug their charging cable no light turns on. Sometime MacBook Air turn on with out reason.
So how to fix this problem?
Fix 1:-
Press and hold the Power button for 20 seconds. Then release the button and press the Power button again.
Fix 2:-
Try the SMC reset. On your Keyboard, press and hold Control + Option + Power button+ Left shift button at the same time for 10 seconds.
Also try PRAM reset.
SEE ALSO : What to Do if Your MacBook Air won’t Turn on
Fix 3:-
If you not hear any fan sound, startup tone and battery indicator lights are completely dead, unPlug and replug the cable going from the batter to connecter.
Fix 4:-
Sometimes this issue might happened because of your charger. Read my earlier guide :How to fix MacBook Air Not Charging issue and check your MagSafe 2 power adapter.
If you have any other problems or solutions, inform us via comment.

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