Mac book air

kevens0702 Said:

"Mac book air: Why is my Mac book air showing random cracked screen, with complete black screen?"

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Your Screen is Failing:

It seems your screen is failing. So take this in for service, ASAP.

To Get this MacBook Pro Serviced...

Contact Apple, and setup a Genius Bar Appointment or see an AASP (Apple Authorized Service Provider) in your local area. Be careful as to where you get this item, ask you may get an error of an unofficial screen. So, to avoid this continual message, it is best to have Apple replace a screen.

Contact Apple:

• Contact Us - Choose Locations
• Proceed from there as Necessary

Or...

Contact an AASP: 

1. Go Here: Find Locations - Apple Authorized Reseller
2. Click: Service & Support
3. Enter: your location information
4. See: if there is an AASP nearby
5. Contact: an AASP that shows up, and find out more about the services that they offer to fix the iPhone

This could be due to any of the following:

• Defective display.
• Defective display cable.
• Defective logic board.

As TheLittles has already mentioned, a visit to your local Apple Store's Genius Bar or AASP is in order.