why black screen on startup apple mac notebook

As soon as you hear the boot chime, hold down the Command + Option + P + R keys together.Many of the computer gurus have tried this solution and can attest to it.Īs a potential solution to the black screen on boot issue, try this while restarting. Some experts suggest that if the above tricks fail, a PRAM reset can do the trick. Just installing Mavericks without erasing the old one won’t work, so only try this method if you know what you are doing with your computer. Go back to the menu and select install Mavericks OSX.Go to disk utility and click Erase Macintosh HD.

Press command R as it starts up and keep holding down until disk utility starts.

Remember that if you haven’t backed up all your files, there’s a good chance you will lose them.

Back up all your date with Time Machine, so once you restart the computer, you can get everything reloaded.

There is also another way of fixing the issue, but we don’t recommend it unless you are a computer guru: If some features and apps don’t show up after the reboot, repeat the process.Īpparently, this issue can be related to an automatic update that never quite got past the login screen.

Now the computer should go to its normal desktop and the issue should be fixed.ĭon’t worry if the screen of your Mac goes pitch black during this process, just hit the space bar (Since the screen can go to sleep during this time.).After a moment, you should see the spinning beach ball and the screen should then move on to something along the lines of “Completing OSX Installation”.Type your password and then hit Enter again. Once you reach the point where your screen goes dark and you see the cursor, type the first letter of the username for your computer, then hit Enter.Restart the Mac and press shift at the same time until you see the progress bar start moving.

Shut the MacBook Air down by holding the power button for ten seconds.So, if your MacBook Air will not boot up past black screen and cursor, you should proceed as follows: Fortunately, there are a few very simple troubleshooting steps to try to fix it. In some particularly rare cases, this situation can be interpreted as a sign of a potential hardware issue. MacBook Air Black Screen: Very rarely, your Mac may encounter some issue during the system boot, like booting to a completely black screen. FebruMacBook Air Black Screen: It Boots with Black Screen

Why black screen on startup apple mac notebook