My mac computer will not turn on

Recovery Mode: It also gives you access to Terminal for advanced troubleshooting. You can find out more in the guide: White or Gray Screen: If you find yourself stuck with a white or gray screen when you try starting up your Mac, this sequence of tips can help you finish booting to your desktop: Luckily, the Mac has the ability to run a built-in hardware test to pinpoint possible problems.

Mac won't turn on: What to do?

You can find instructions for using the hardware diagnostic system in the guide: Tech Tip: Name required. Email required. Leave this field empty. Notify me of follow-up comments by email. Notify me of new posts by email. Which is typical of Apple not longer caring about the computer business. And I just had a Tier 4 compete rebuild. Apple shut off the chime, and the beeps when raising or lowering speaker volume, to avoid the increasing sonic disruption of meetings and classes being caused by attendees using Macs. Problems clicking the trackpad are a primary symptom of a swollen battery.

And yes, a brand new battery can swell too. I press the power button. However, sometimes after leaving the computer off for several weeks, it will start up just fine…. The power adapter was plugged into the wall socket and plugged into the MBP.

MacBook won’t turn on—how to fix it

Signed off and powered off my MBP, forgot something, went to power up my MBP still hooked up to connected MagSafe power adapter and nothing…did a power cycle test…. Changed power outlets to no avail, came to the conclusion that the battery may be gone. Eventually had to use my smartphone for the business meeting slides for the sessions. I had a strong hunch that the OEM battery was kaput, ordered a replacement from OWC, installed it per provided instructions.

My old trusty MBP arose from the dead, and came back to life!!! You could have an issue with one or more of those devices or their cables.

• 2. Run a Power Cycle.
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If nothing appears on your display, make sure that its brightness is turned up. Start up in safe mode. Start up from macOS Recovery. If the only way that you can start up is from macOS Recovery, the operating system on your startup disk might no longer be usable. If you recently installed memory or a hard disk or SSD , make sure that it's compatible and installed correctly.

If possible, remove it and test with the original memory or disk.

Thanks for your sharing, I had have same issue with you. I followed your steps. And ahaa!! That is so awesome!! Its always Battery Issues with Apple Products. I gave up!! Constantly going to Apple Store is annoying especially talking to Genius staff is useless. Thanks so much! I'm grateful for your help! Thanks a lot!!! Thanks again. Suddenly Macbook Pro bought in would only turn on , and run for about 2 minutes, then shiut down.

Just running that Test did something that all the other processes could not. I wish you very well and great success. I've got a 27" iMac from A little while ago it wouldn't boot anymore. I heard the "Wall-E" sound, it showed a grey background, the apple logo and a bar loading. So I was stuck. He provided me with a stick with the OS. I started the computer with the USB drive plugged in, and held down the option button.

This shows the option to boot from the USB drive. When I selected that, I got back to a grey background with an apple logo and a bar loading. It got hanging again. I did the extended test. It found nothing. Out of desperation I tried starting my computer once more with the USB. Now I did get into Disk Utility. I was able to clear the HD and install the new OS. Now I'm wondering if I could have just started the computer after the test, without re-installing the OS. Oh well, it's an old computer, I only use it for Netflix nowadays.

Thanks for the tips, they were golden! Had to log in and post that the 10 second with unplugged, then while holding do another 10 seconds, fixed my issue. My Mac hadn't been turned on in probably at least a year and this got it to boot! Thank you! No chime. I've tried a variety of fixes suggested here and in other places with no luck. Machine starts to boot and goes to a black screen with cursor showing after the progress bar is about halfway.

I've tried various key combinations and can't get the chime so most key combinations don't work. Help button says hard disk needs replacing? I had the same problem, running extensive memory tests on my computer solved it for me, as you can see in my comment. I switch off my macbook pro before going on holiday for a couple of days. Came back wanting to catch up with work and would not start at all, with battery indicator on charger a very dim green.

Have searched the net for every possible solution but nothing is working! Might my macbook be really dead! The power cycle tip did the trick! I was starting to get worried after I worked through the apple troubleshooting guide without results Thanks for the article. I just bought an old Mac book pro 17" 2. It worked when the guy showed it to me and I messed around on it for about an hour or two later that night. Then I plugged it in and Battery showed full green light on cord was on But nothing no beep no fan no screen.

I was about to find out how cool it would be to run over it in my truck and make a video of how I will never buy Apple again 1st time apple user And your article got me to try the ole reset thing I noticed while I was disconnecting and reconnecting the bAttery for the hundredth time, while leaving the power cord plugged in I heard the fans click on for a sec I noticed after trying a few more times to duplicate my accidental discovery and found that I was pushing my thumb into the bottom case of the laptop, just outside to the lower left corner of where the battery fits in my model A for those of you lucky enough to have this beauty of a relic.

And BAMM fans start up Don't really know what short or flaw or what not that I discovered but she's still working well, and my truck tires shall never meet my laptop now. I did a Recovery mode as explained above and tried to do a restore from Time Machine back-up, but the back-up disc didn't appear.

In Disk Utility it did appear, so I did a copy of the backup disk onto my internal HD, which was probably a bad idea, the computer still wouldn't boot. I also made an external usb installation media with DiskMaker on another computer, but when selecting"Install OS X" from the usb and selecting the internal HD for the installation, I now get the message "This disk is used for Time Machine backups" - apparently because it is indeed a copy of my backup disk!

So this seems quite locked indeed. Does anyone have a solution? Is it possible to unlock the internal HD somehow, e. Thanks so much!! Resetting the PRAM did the trick. I was about to give it away and buy a new Mac until I came across your article. I now have a great working laptop again. Observations 1 Mag Adapter Shows Green when plugged in 2 pressing the small button on the left side shows full battery charge. Work in progress. I have a Macbook Pro 13" mid with a gb HD.

I then made a 1 on 1 copy of my old HD onto the SSD, it works for a while andeven I can shut it down, I can reboot it, put it in hibernation and standby but for a unknown reason after weeks, if I reboot it or shut it down it won't boot up again.

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I thought about compatibility of the SSD but if not compatible it won't works at all. Does anyone have a idea? Thanks Jessica. No I didn't contact apple support. Yesterday again same problem. But thanks for the post and information. Trim Enabler has a known Issue since Yosemite where you'd have to disable the check for a kexts checksum performed by Yosemite to check for non-Apple kexts.

You will find it right on their site. I'm dealing with an older Macbook Pro, but the information is still valuable for anyone with Macbook problems. Thanks for the post. Thanks Scot! I aim to include information that would be useful to people even if they aren't dealing with the exact model I am. Top Deals. Email Facebook Whatsapp Pinterest Twitter. This will sign you up to our newsletter Enter your Email. Read our privacy policy. Enjoyed this article?

Stay informed by joining our newsletter! Enter your Email. This article was exactly what I was looking for. The power cycle did the charm for me. YOu totally saved my Macbook Air from a lobotomy. I did this: Nope, just the logo and bbar that almost gets to the end. Now what? My MacBook Air booted after following a few steps! Power cycle worked for me. This helped me so much!!! You are a genius thank you!! I owe you my life. Hi, my MacBook Pro 9. Thank you for the power cycle tip! I'm having the same problem, but with a retina MacBook Pro. Someone help please.

The three beeps and a pause was the clue. Oopsi Of course I didn't back up my files!! Hope it goes well and nothing is lost.

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• Mac Won't Boot? A Step-by-Step Guide to Waking It Up.
• 3. Perform the special power cycle.
• What to Do When Your Mac Won’t Start Up?
• What to do when your Mac won’t power up at all | Other World Computing Blog?

Now come? My macbook pro is still dead. I have tried everything. Sounds like mine and none of these steps even showed anything registering at all. Wonderful news!

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So glad I could help. Glad to know this still works, Charles! Holy crap! Power cycle worked!

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Thank you it helped me a lot and the trick with the power cycle worked for me. August - 15" MacBook Pro What happened: Just clicked and turned off. Observations 1 Mag Adapter Shows Green when plugged in 2 pressing the small button on the left side shows full battery charge Tried: Same problem here Mark, did you get it to work?

Hi EL. MO, Sorry I'm not familiar with this sort of issue. Have you tried contacting Apple Support? Good luck, Jessica. Regards, EL. How old is your Macbook Pro? Scroll down for the next article.