Every time a new version of macOS is released, Mac users cannot wait to downloading and installing, trying those longawaited new features. Updating to new macOS can be a delighted process for most of Mac users, while, some of us may be suffering from such an update for different reasons, like Mac won’t turn on after update to macOS Sonoma, Ventura, Monterey or other versions. If you run into such a problem, you can find the most complete guide ever to get it solved, also you are given the best solution to deal with lost data after such an update.
The “Mac Won't Turn On After Update” issue can be caused by different reasons, here we collect 10 feasible solutions to get it fixed.
Whenever a problem occurs, restarting your device is always the simplest yet efficient way to fix it. Restarting can start up the Mac fresh by clearing memory. And there are 2 ways to restart.
If your Mac is open, click on the Apple icon and choose Restart. Then disconnect all the accessories on your Mac, particularly the recently installed memory or hard disk that may be not compatible on your Mac.
Leave the Mac as it was, press and hold on the Power button to turn the Mac off, then hold and press the Power button after several seconds to turn the Mac ON again, also you can press the hot keys combination to restart your Mac: Control+Command+Power.
It seems to many Mac users that there is no necessity to check the display when a Mac won't start after update to Sonoma, Ventura or Monterey. But, it is not. Sometimes, it is just the reason of a damaged or unconnected display. When you start the Mac, listen carefully if it makes any sounds, if yes, Display won’t be the problem, if not, re-connect the power cables, then restart. If it still fails to turn on, find a technician.
Power is required to turn on a Mac and we need to make sure there is enough power supply to run a Mac.
If you are using Mac with battery, make sure there is enough power for macOS update, the upgrading takes time. Or you can remove the battery and plug in a charger to make sure there is enough power supply.
If you are using Mac connecting to power supply, make sure the power cord and adapter are plugged in properly. If it still doesn’t work, unplug and re-plug to check and test, or you can test with a lamp or other device.
There will be some hardware-related reasons causing the “Mac won't start after macOS update”, in this case, you can use Apple Diagnostics to find out the problem.
Apple Diagnostics helps to test Mac hardware and suggests solutions, that is to say, you can use this tool to find out which hardware on your Mac runs into a problems.
As we mentioned above, a damaged hard drive or SSD may be the reason stopping your from open the Mac after update. Besides using Apple Diagnostics, users can also use Disk Utility in Recovery Mode to repair the disks for Mac start-up.
If your Mac won't turn on after update to macOS Sonoma, Ventura or Monterey, you can try to boot Mac in safe mode. Mac safe mode is a way to start the Mac while performing some checks and repairing your Mac, also preventing some programs from launching automatically, which is a good way to build an efficient environment to start your Mac.
NVRAM means non-volatile random access memory, it refers to a small amount of special memory in each Mac to store the information that your Mac needed before it loaded the operating system. If there is something wrong goes on the values of NRRAM, your Mac won’t start up, and this happens when you upgrade your Mac to a new macOS version. So, we can reset NVRAM if your Mac doesn’t turn one.
Sometimes, a problem just appears during the 1st installation of a new macOS version and reinstalling can magically solve the problem.
SMC means System Management Controller, a component of your Mac hardware storing settings about power management, temperature monitoring, keyboard backlights and others. Though Apple doesn’t suggest resetting SMC without trying other possible solutions to fix the “Mac Won't Turn On After Update”, it neither mentions any adverse impact by trying this method. If you have tried all possible solutions but still fail, you can reset SMC.
Methods to reset SMC on different mac will vary a little:
For Desktop Mac---Disconnect the power cord and wait for 15 seconds, then connect it back and wait for 5 seconds, finally start the Mac.
For Portable Mac with removable battery---Shut down the Mac, disconnect the power cord and take out the battery. Now, press and hold Power button for 5 seconds. Then put the battery back, connect the power cord and turn the Mac on.
Well, if you have tried all above-mentioned solutions but Mac still doesn’t turn on, you’d better contact Apple.
1) Turn to Apple Support Page and contact
2) Visit an Apple Store
3) Find authorized service provider.
If it is not that convenient for you to contact Apple Support locally, you can pay to a reliable local technician to fix such a problem.
In fact, if you get your Mac well-prepared well upgrading to Sonoma, Ventura, Monterey or Big Sur, it will be much likely that the new macOS can work properly on your Mac. For further macOS update or speedy OS running, you can try following tips:
Data loss is always the most annoying problem after upgrading to macOS Sonoma, Ventura, Monterey or other new versions. Some your files just disappear for no reason. To help your recover the lost data during updating, here we recommend Cisdem Data Recovery.
Cisdem Data Recovery is designed to recover virtually all kinds of data lost due to system update, factory resetting, deletion, formatting, virus attack, etc., no matter you want to recover files from external or internal hard drive on mac. Also, it can be used to repaird damaged videos.
When Mac won't start after update to macOS Sonoma, Ventura, Monterey, Big Sur or others, you need to restart first. If still fails, try above-listed methods to fix it. In addition, there is one thing you should pay attention to before upgrading macOS, back up all important files. Even if you lost files during the update, you can still restore them without using a piece of mac data recovery software.
Connie has been writing for Mac productivity and utility apps since 2009. Each review and solution is based on her practical tests, she is aways energetic and trustworthy in this field.