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Mike
Mike, Mac Medic
Category: Mac
Satisfied Customers: 8690
Experience:  Over 20 years IT experience with Apple computers in publishing, marketing and design.
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I am using a monitor with my MacBook Air. It has been

Customer Question

I am using a monitor with my MacBook Air. It has been working fine. today, it is randomly going black. If I reboot the computer, it will come up for a bit and then goes black again. I have not upgraded or chaged settings (that I know of)
JA: Just to clarify, how old is your MacBook Air and what operating system are you running?
Customer: I believe it is between 2 and 3 years old and I can't recall how to figure out the operating system.
JA: Have you installed any updates recently?
Customer: Not in the last few days unless it was done automatically.
JA: What troubleshooting have you tried?
Customer: Disconnecting the monitor and rebooting the MacBook
JA: Anything else you want the Mac expert to know before I connect you?
Customer: If you can tell me how to find out which operating system, I could give you that info.
Submitted: 22 days ago.
Category: Mac
Expert:  Mike replied 22 days ago.

Hi, welcome to justanswer.com! My name is Mike.

I am going over your question and I will be with you shortly.

Expert:  Mike replied 22 days ago.

1. Shut down the computer.

2. Plug in the power adapter to a power source, connecting it to the Mac if its not already connected.

3. On the built-in keyboard, press the (left side) Shift-Control-Option keys and the power button at the same time, if it starts up you held the power button before the other keys, try again.

4. Release all the keys and the power button at the same time.

5. Press the power button to turn on the computer.

6. Press and hold the Command-Option-P-R keys before the gray screen appears.

7. Hold the keys down until the computer restarts again at least twice.

8. Release the keys. Then let me know if the problem persists.