Mac help computer wont start up

MacBook stared but hangs, then again boot problem. Did all the things. But still same problem. Sometimes it turns on then hangs after 2 minutes and sometimes, screen shows flickering.

If your Mac won't turn on

I think its the time to take it to Apple Service Centre. My macbook pro mid was okay the night before until I tried to switch it on the next morning. I discovered it wouldn't turn on even after many trials to get it to start. I left it for some time and came back to it but still had the same issue. Its working fine now and I appreciate that your site could help. Thank you so much. Mid MacBook suffered what seemed to be a too fast battery discharge on normal usage. Changed battery, new one appeared to have low capacity value. Changed for another new battery, seemed to have greater capacity according to System Parameters software and much greater discharge time.

Went through Battery Calibration process. All seemed well. Installed remaining battery screws and back cover. Tried to start up; nothing. No light, no fans, nothing. Removed screws until the last known working conditions were duplicated; no change. Went through all processes suggested in above article, still nothing. Battery voltage at first 9-pin motherboard connector is Anyone have any suggestions?

• How to Troubleshoot Startup Problems With Your Mac.
• Step 1: Run Disk Utility!
• When good Macs go bad: Steps to take when your Mac won't start up;
• move data from time machine to new mac.
• 3. Perform the special power cycle.
• come ridurre una foto con mac.

It did not resuscitate. Thanks for the tips. Memory is fine. The SSD is fine. But my Macintosh HD partition the whole drive cannot be repaired, evidently. I am not sure what the problem could be. My mid MacBook pro will start and boot up but only after about minutes of holding and releasing the power button. It works fine after it finally starts. It gets power just fine and I can see the power light come on everytime I hold and release the power button.

I have no idea what to do.

Please help! My MacBook Pro was brought to life again. After it tried rebooting after an update, it wouldn't turn on again. Just a very short "bssshhhhrrrttttffffrrrpppp" the sound it makes at boot up, like it's about to throw up and the front indicator went out again. My Mac Pro worked until I updated the os to high Sierra. The Mac kept displaying something to do wth ICloud. When it is switched on the screen awakens, the Apple logo appears, the progress bar starts, very very very slowly proceeds but that is as far as we get.

No further. You might consider reinstalling the operating system. That should provide a boot up menu either from your computer HD or another HD that you use as a backup.

• time tracking software mac reviews!
• Check for power issues.
• 1. Check your charger’s cable.
• Step 2: Safe Boot.
• open source c++ compiler mac.
• 2. Run a Power Cycle;

Options should include restoring a prior backup or reinstalling the operating system. Some of these options may delete personal files so use at your own risk. Thank you so much for your website! Awesome stuff! Your instructions were really instructive and clear. Just by following your steps, I managed to get my crashed macbook back to health very fast well, 3 hours, but that is faster than sending it to the Apple workshop.

Thank you so much! I turn off myMacBook Pro and when I turn back on, I get the apple with black line inching its way to the end. Gets to the end and does nothing. I ran the hardware diagnostics and it said No Problem found. Me too. Disk First Aid showed my hard drive as being completely full. I'm going to try and delete some files and see what happens. Reset the SMC and the PRAM as you suggested above on my daughters 'dead for a year' macbook pro and it is currently running and happily backing up its files. We shall see how stable it is before jumping for joy! Using a MacBook I know only 2 yrs old!

Last week it shut off while I was using it. Thought a power glitch, restarted but it was stuck in a loop. Moments after showing the Apple ID screen, it shut off, sounded the chime and over and over it went. Tried all the suggestions you recommended. Files all said ok, only problem it said was an issue with the camera.

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Yea it booted up and I saved data to a jump drive. Worked fine for several days then it shut off again. Now none of the above have an effect - just chime and loop. Took it to India this summer had a few power glitches there, destroyed a kindle fire and curling iron, scared something happened to my Mac. It has had a few problems since I got back, had to reinstall Office. Any help, please.?

Thank you so much for this article. I have never heard of you or this website, but a quick Google search on my phone led me here. I had physically shut my laptop while installing the new update. This saved me valuable hours and a trip to the apple store. I am typing this review on my laptop now because of you. Again, thank you a bunch. Great article. Thanks to this article I was able to open recovery partition.

My main drive macintosh was grey and I could not run first aid on it. It also wasn't listed as a location to reinstall OS. I am backing up right now just in case this happens again! Macbook pro 15" retina, purchased in fall of for anyone interested. Hi thank you for an excellent article. Nice to see a Vancouver ite so active. My problem is with a Mac desk top but the suggestions you make apply to the top as well.

I found the s that came with the computer. I put in the Hardware disk and sure enough, miraculously, after pressing ''D key up came the Hardware Test screen. I pushed the Test box button and left the computer to do its test. After 4 hours the progress bar was within a centimeter of the end. But there it stayed even afetr leaving it overnight. What to do now? Any ideas would be most appreciated. Retired Apple Certified Tech. A friend's 15" MBP non-removeable battery would only flash led for a second and run fans for a second. Thanks much. You made me look smrt.

Hi, thank you for posting this. Older MBP. I was getting anxious as I tried everything until I got towards the bottom of the list. The recovery partition worked! I used a recent time machine backup. I fixed myself although only with the guidance of your article. Thank you for sharing this. Not sure which one worked but my mac is back- thanks for a great article - best I read on the web. I thought I tried everything to get mine to turn on and found this article and did the holding down the power button 10 seconds twice and then the third time plugged the power cord in and pressed the power button and it finally booted up!

Thank you for the trick!! Unplug the battery. Unplug the MagSafe power cable. Hold down the power button for about 10 seconds and continue to do that. While still holding the power button down, insert the MagSafe power cable and hold it for another 10 sec. And it started right up. I thought that was a crazy thing to do and how did anyone ever discover that it worked???

But it sur did the job on this laptop I managed to switched it on, where my user login logo appeared, but then a loading bar would appear and just freeze. Then I found your link, which made my day! Happy Mac again. Thank you!! Thank you for posting this: I chose a time machine backup, which is now underway I updated it to macOS Sierra yesterday night and left it be, when I opened it the next day it wouldn't continue starting up.

Please help. I can send you the picture of what it's showing me now. Been trying several tips but nothing is working. Remember the reason you wrote this article, and why I wasted my time reading it, was because my computer wasn't starting up. At all!

Check for display issues

I reinstalled the OS as a clean install over the top of an install from Time machine. Problem is it won't wake properly from sleep. Sometimes I get the log in screen - where password is required - and having input the password the same screen the appears again, When I input password for the second time it then lets me in and generally gives me the pages left open when put into sleep mode. It's so frustrating and bizzare behaviour. Disk utility tells me there is nothing wrong Any thoughts welcome.

I did the power cycle tip too and it worked. Mine is a vintage one already. I used to leave it on Sleep mode most of the time while connected on the charger. I'm not sure if that was the reason why the second I open it, it won't boot successfully. I'm worried about the files I just transferred from my phone but thankfully it opened so I'll go ahead and retrieve them back for safety. Thanks again! I followed the power cycle reboot steps and got my mac to give me signs of life and then when it died in the middle of boot I restarted the process and plugged the battery in the middle because I only have a 60w power supply and needed an 85w.

I used the battery as a wattage boost in the middle and got my computer back up and running. Thanks for the guidance. My Mac Pro late , non removable battery behaves strangely. It does not switch on at all. Battery shows fully charged when I check by small side switch.

Now, If I remove adapter connector, Mac starts up. But no chime. Before it completes booting it shuts down. Restarts on its own after sometime. On restarting same thing is repeated. Any suggestions please Black screen, L-type chord shows a charge going on orange light , fan whirring. No other signs of life. No start up chime, no matter how many times I hard power down and restart.

It's a MacBook pro with a non removable battery. Hi Fennelly. I have the same issues right now. Did you manage to bring back your computer back too life? Holy Bologna!!!

1. changer la page daccueil mac.
2. 1. Check If the Mac Has Power!
3. What to Do When Your Mac Won’t Start Up?

I was convinced my MacBook Pro was toast. The special Poeer cycle seemed Compliments on the well structured and informative guide! Started using a Macbook Pro Md for a week or so now, when it just turned off. At the istore they performed a SMC and run a diagnostic check - proclaiming all is fine. A day after it happened again. Thank you kindly. Great guide, I have no Mac experience and was able to repair my son's Mac using your guide. After hours of trying everybody else's suggestions I fixed me problems with your pointers!!!

It took many layers of fixes but eventually sorted out my MacBook. I luv u?????? You are awesome! I reset the PRAM and it booted up quickly. Worked like a charm. You are the best. Thank you. The first solution worked for me!! The fan seems to be a lot louder.. But my MacBook is up and running. Thanks so much, Jessica and to Victor Clausson for the "special power cycle" tip. Thanks Jessica! But even after all the El Cap troubleshooting, I've still been stuck! Then, a little comment from you and I was digging into RAM at the same time, but getting no love: It's the memory sticks.

Thank you, thank you, thank you!



Mark Alan E http: I thought you were nuts. Unplug the power and hold down the button? Reattach the power and keep holding the button down? What was that possibly going to accomplish? Have appt Apple Store in 1hr!! Been having battery problems within my Apple Care but store refused to do anything; kept doing diagnostic, all extras……???????? I didn't remove my partition with the OSX install - I just can't access it!

I don't know what to do. I have replaced the old keyboard thinking it might be problem with the new one. Hi, I'm happy all other users solved their problems with Mac.. But, My problem seems a bit complected.. But still get White Screen after chime Sound It may also help you perform the repairs needed to get your Mac up and running again. Many startup problems by a drive that just needs some minor repairs. But you can't perform any repairs if you can't get your Mac to finish booting. This guide shows you tricks to get your Mac up and running, so you can try to repair the drive with Apple or third-party software.

We don't limit the solutions to just one method of getting your Mac to boot but cover any methods that could help and let you get your Mac running to the point where you could repair the startup drive or further diagnosis the problem. A spare user account with administrative capabilities can help you troubleshoot problems with your Mac.

The purpose of a spare account is to have a pristine set of user files, extensions, and preferences that can be loaded at startup.

Mac Won't Boot? A Step-by-Step Guide to Waking It Up

This can often get your Mac running if your depending user account is having problems, either at startup or while you're using your Mac. Once your Mac is up and running, you can use a variety of methods to diagnose and repair the problem. You must create the account before trouble strikes, though, so be sure to put this task at the top of your to-do list.

You can even have your Mac tell you each step it's taking during startup, so you can see where the startup process is failing. Some Mac startup problems are caused by an OS X update that went bad. Something happened during the installation process, such as a power hiccup or power outage.

The end result can be a corrupt system that won't boot, or a system that boots but is unstable and crashes. Trying again with the same upgrade install is unlikely to work because upgrade versions of the OS don't include all necessary system files, just the ones that are different from the previous version of the OS. Because there's no way of knowing which system files may have been affected by a corrupt install, the best thing to do is use an update that contains all necessary system files.

Apple provides this in the form of a combo update. This guide will show you how to obtain and install combo updates. Share Pin Email. Tom Nelson has written hundreds of articles, tutorials, and reviews for Other World Computing and About. He is the president of Coyote Moon, Inc. Updated November 01, When you're having startup problems, Safe Boot can help you get your Mac running again.