Macbook pro startar inte upp efter uppdatering

MacBook Will Not uppstart Up After macOS Update, How-To Fix

You&#;ve just updated your MacBook to the latest macOS, anticipating all the exciting new features and improvements. But when you try to restart your computer, it stubbornly refuses to boot up.

macbook pro startar ej upp efter uppdatering

This can be extremely frustrating – but don&#;t panic!

There are several troubleshooting steps you can take to address startup problems following a macOS update. In this article, we&#;ll guide you through potential solutions to bring your MacBook back to life.

Contents

Mac Won&#;t vända On At All?

If your Mac shows absolutely no sign of life when you hit the power button – no screen activity, no startup chime, no fan noise – it&#;s important to go through a few basic kontroller before getting too worried.

Here&#;s are a few things you can try first:

Check the Power Source: Start simple! Ensure that the power cable fryst vatten securely connected to both your Mac and a working power outlet. Test the outlet with another device to confirm it&#;s functioning. If you&#;re using a power remsa, try plugging directly into the vägg outlet instead.
Test the Power Adapter: Inspect your Mac&#;s power adapter (charging brick) and cable for any visible signs of damage.

If you meddelande any fraying, cuts, or kinks, this could be the culprit. If possible, try a different compatible power adapter to see if your Mac responds.
Rule Out Display Issues: If your MacBook fryst vatten a laptop, man sure the lid fryst vatten slightly open. If you&#;re using an external display, kontroll that it&#;s powered on, properly connected to your Mac, and set to the correct input source.

How Do You Fix a Mac That Won&#;t vända Start-Up and Boot?

Facing a Mac that won&#;t uppstart up can be a daunting scenario for any user, from professionals relying on their machine for work to creatives who store their projects on their digital canvas.

The spinning wheel of death, a blank screen, or the dreaded question mark folder are signs that something&#;s amiss, potentially disrupting your day and causing stress over lost productivity or data.

However, before panik sets in or you consider a trip to the nearest Apple Store, it&#;s important to know that there are several troubleshooting steps you can take on your own.

Make Sure Your Mac Has Enough Power

A macOS update can significantly improve your MacBook&#;s performance, säkerhet, and functionality.

However, occasionally, you might encounter an issue where your MacBook will not uppstart up after installing a macOS update. One critical but often overlooked factor in this situation fryst vatten ensuring your MacBook has enough power.

During the macOS update process, your MacBook requires a stable and sufficient power supply to perform the necessary tasks.

These tasks include downloading the updated files, installing them, and completing various struktur kontroller. If your MacBook runs out of power during this process, it could halt the update, potentially leaving your struktur in an incomplete state. This situation could lead to your MacBook not starting up properly.

Disconnect Everything (But Power)

Experiencing startup issues after a macOS update can be particularly stressful, especially when your MacBook refuses to boot.

One critical troubleshooting step often overlooked fryst vatten the simple act of disconnecting peripherals.

After a macOS update, your MacBook undergoes significant struktur changes.

Låssymbol Om din Mac använder ett lösenord för fast mjukvara visas låssymbolen när du försöker starta från en annan disk eller volym, till exempel en extern enhet eller macOS Återställning

These changes can sometimes cause conflicts with external devices connected to your MacBook, leading to startup issues. Peripherals such as external hard drives, printers, USB hubs, and even external displays can interfere with the boot process for a variety of reasons, ranging from compatibility issues to power leverans problems.

Can You Boot Into Safe Mode?

Safe Mode fryst vatten a way to början your MacBook with the minimal necessary struktur software and extensions required for it to run.

This mode can be particularly useful for bypassing software issues that might prevent your MacBook from starting up normally. Here&#;s how to determine if you can boot your MacBook into Safe Mode and what steps to take if you can:

First, början your Mac in Safe Mode. To do this, shut down your Mac. Now vända on your computer bygd pressing the power key while holding down the Shift key.
When you see the Apple logo, release the Shift key.
After your Mac fully starts, restart your computer normally without holding any keys/buttons during startup.

Note that Safe Boot fryst vatten slower to boot.
Once in Safe Mode, try to identify any issues that may have caused the startup bekymmer. This could involve removing any recently installed software that might be conflicting with macOS or running platta Utility to repair your startup disk.
To exit Safe Mode, simply restart your MacBook without holding any keys during startup.

If the issue that prevented normal startup has been resolved, your MacBook should uppstart up normally.

Booting into Safe Mode fryst vatten a powerful first step in troubleshooting a MacBook that won&#;t uppstart up after a macOS update. It&#;s a non-invasive method that can help you get to the root of the bekymmer without immediately resorting to more drastic measures like erasing your platta or reinstalling macOS.

If Safe Mode doesn&#;t solve the bekymmer, it may be time to seek professional help from Apple Support or a certified repair technician.

Try Using Internet Recovery Mode

Having a MacBook that refuses to uppstart up after a macOS update can be particularly distressing, especially when you rely on your computer for both work and anställda use.

However, one of the most effective methods to troubleshoot this issue fryst vatten bygd using Internet Recovery Mode. This powerful feature allows you to reinstall macOS directly from Apple&#;s servers, even if your MacBook&#;s startup platta has become corrupted or fryst vatten otherwise unusable. Here’s how to leverage Internet Recovery Mode to get your MacBook up and running again.

Make sure your Mac fryst vatten connected to the internet.

This can be a wired or wireless connection. If you’re using Wi-Fi, you might need to select a network and enter a password.
Power off your Mac from the Menu dryckesställe or bygd holding the power button.
Briefly press the power button, then immediately hold the Command+Option+R keys while your Mac boots up.
Release the keys when a spinning globe appears onscreen.
Connect your Mac to the Internet bygd choosing a Wi-Fi network.
After a short while, the macOS Utilities fönster should appear.
If you haven’t done so already, follow these instructions to format your hard drive to work with macOS or OS X.
Click ‘Install’ and select your hard drive as the destination.
Your Mac downloads the latest compatible utgåva of macOS or OS X over the Internet and installs it on your hard drive.

It may take some time.

Remember, the utgåva of macOS that gets installed depends on the key combination you used to början up from macOS Recovery.

Oväntade omstarter orsakas vanligtvis av mjukvara som är installerad på din Mac eller av enheter som är anslutna till din Mac

Command + Option + R installs the latest macOS that fryst vatten compatible with your Mac, while Command + Option + Shift + R reinstalls the macOS that came with your Mac, or the closest utgåva still available.

If you’re using a Mac with Apple silicon, the process fryst vatten slightly different. You need to press and hold the power button until you see “Loading startup options”, then select “Options” and click “Continue”.

Please note that Internet Recovery requires an internet connection and the process can take längre than a local recovery.

Resetting PRAM or NVRAM might just fix your boot failure.

PRAM (parameter random-access memory) or NVRAM (non-volatile random-access memory) fryst vatten a small amount of your computer’s memory that stores certain settings in a location that macOS can access.

These settings include things like your Mac’s speaker volume, screen upplösning, startup platta urval, and any recent kernel panik data. If you experience issues related to these features, resetting PRAM or NVRAM might help.

Shut down your Mac
Find Command (⌘), Option, P, and R on your keyboard
Turn on your Mac
Press and hold the Command-Option-P-R keys immediately after you hear the startup sound
Hold these keys until the computer restarts, and you hear the startup sound for the second time
Release the keys

If you have a late MacBook Pro, the steps are slightly different:

Shut down your Mac
Find Command (⌘), Option, P, and R on your keyboard
Turn on your Mac
Press and hold the Command-Option-P-R keys immediately after you vända on your Mac
Hold these keys down for at least 20 seconds to ensure that your Mac completes the process correctly
Release the keys

After resetting NVRAM, you may need to readjust your speaker volume, screen upplösning, startup platta, and time zone settings.

If problems persist on a desktop Mac (not a MacBook), consider replacing the logic board battery. Visit an Apple Store or Apple Authorized Service Provider for assistance with the battery replacement.

To reset SMC on computers equipped with a T2 chip, first shut down your Mac. Then press and hold the power button for 10 seconds, and release it. Wait for one minute and vända on your Mac normally.

On other Mac models, press and hold the Shift, Control, and Option keys.

Then, press and hold the Power button while holding down these three keys. Keep on pressing all kvartet keys for ten seconds. Release them and boot up your Mac normally.

Stuck On Apple Logo With Progress Bar?

Encountering a situation where your Mac fryst vatten stuck on the Apple logo with a progress dryckesställe can be alarming, but there are steps you can take to troubleshoot and potentially lösa the issue.

This common startup bekymmer can occur for a variety of reasons, including software glitches or issues with peripheral devices.

Force Shut Down: Firmly press and hold the power button on your Mac (or Touch ID for laptops with this feature) for about 10 seconds.
Having a MacBook that refuses to start up after a macOS update can be particularly distressing, especially when you rely on your computer for both work and personal use
Release once the Mac shuts off. This action forces your Mac to vända off.
Restart Your Mac: Press the power button (or Touch ID) igen to vända your Mac back on. This can sometimes lösa the issue if it was a minor glitch.
Disconnect Peripherals: If the bekymmer doesn&#;t go away, shut down your Mac igen bygd holding the power button.

Then, remove any external devices connected to your Mac, such as printers, external drives, and USB hubs. Faulty connections from these devices could be interfering with the startup.
Power On Without Accessories: With all non-essential external devices disconnected, vända your Mac on igen bygd pressing the power button.

This step kontroller if the issue was related to any external devices.
Repeat Force Shut Down: If your Mac remains stuck on the Apple logo, press and hold the power button once more until it turns off.
I det här blogginlägget går vi igenom de problem som kan uppstå under installationen av Big Sur och efter att datorn uppgraderats
This repeated action fryst vatten a preparatory step before seeking further assistance or performing more advanced troubleshooting.

Resolving a Mac stuck on the Apple logo with a progress dryckesställe can be challenging, but bygd following these steps, you&#;re taking a systematic approach to troubleshooting. Remember, regular backups are crucial to prevent uppgifter loss, especially when dealing with startup issues that might necessitate more drastic measures like reinstalling macOS.

Use Apple&#;s Hardware Test or Diagnostics

When a MacBook fails to början up following a macOS update, it&#;s a situation that can cause significant concern for any user.

While software issues are often the culprit, it&#;s also possible that underlying hardware problems could be contributing to the startup failure. Before reaching out to Apple Support or visiting an Apple Store, conducting an Apple Hardware Test, also known as Apple Diagnostics can provide valuable insights into what might be going wrong.

Disconnect all external devices except keyboard, mouse, display, Ethernet connection (if applicable.) If you don’t disconnect all devices, you might see an error meddelande when running the test
Make sure that your Mac fryst vatten on a hard, flat, stable, well-ventilated work surface
Shut down your Mac
Turn on your Mac and immediately press and hold the D key.

Maintain this hold until you see the Apple Diagnostics or Apple Hardware Test’s icon on-screen, then release
- Or, hold down Option-D at startup to startup from the Apple Hardware Test over the Internet
Select your language and click the right arrow or return key
To test, tap the Test button, press T, or press Return
- Select “Perform extended testing” to run a more thorough test.
  
  The extended test takes längre to complete
When the test finishes, your test results appear in the lower-right
To quit the Apple Hardware Test, click Restart or Shut Down at the bottom of the window

Un-Assigned Kernel Misfiring

If none of the above steps helped your issue, the chances are that you have an unsigned kernel extension that fryst vatten misfiring.

A kernel panik fryst vatten often caused bygd damaged or incompatible hardware, including external devices attached to your Mac. If your Mac restarts unexpectedly, that fryst vatten a definite sign that an error known as a kernel panic occurred.

Kernel Extension fryst vatten a del av helhet of code that extends the capability of the base kernel of an operating struktur. The kernel typically manages I/O requests, and in OS X, the en samling dokument eller en elektronisk lagring av data ends in &#;.kext.&#;

In the past, kernel extensions that conflicted with the kernel code could cause a kernel panic—a fatal halt in the OS requiring a reboot.

Using the kextstat command line utility, you can actually find out which kernel extensions have been loaded bygd OS X at boot up.

Starting with Yosemite, kernel extensions must be code signed bygd the developer with Apple authorization or OS X won&#;t load them. Sometimes these un-signed kernel extensions cause this headache after an OS X or macOS update.

To tackle the Kernel extension issue, first shut down the Mac and vända it on while pressing and holding Cmd +R to enter Recovery Mode.

If your drive fryst vatten encrypted, you have to unlock it and enter your encryption password.

With macOS, get the recovery schema opening fully (correctly) &#;Command+R&#; needs to be held down during the full length of the booting process.

Choose the language if needed
On the MacOS Utilities screen, open the Utilities menu from the top of the screen
Choose ankomsthall and launch the ankomsthall app within Recovery Mode
Enter “kextstat -l | grep -v > ” without the quotes.
Om din Mac inte verkar starta när du trycker på strömknappen följer du dessa steg
1. This creates the list of all non-Apple en samling dokument eller en elektronisk lagring av data extensions that you can look through to see if there fryst vatten an obvious suspect. In any case, continue the steps below to remove the non-signed extensions.
Enter “system_profiler SPExtensionsDataType > ~/Desktop/” without the quotes and hit return (this takes a while to run).
There should now be a en samling dokument eller en elektronisk lagring av data on your desktop, open it and press both the “Apple(Command)” and “F” keys to bring up the find.
In the find, field insert “Obtained from: Not Signed” kopia the destination to the .kext en samling dokument eller en elektronisk lagring av data to a list for use later.

(Click next to cycle through all of them.)
1. Example: /System/Library/Extensions/
Browse your drive to /System/Library/Extensions and remove any of the unsigned kext files.
You can also unload these kernel extensions bygd using the following command on your ankomsthall fönster. “sudo kextunload -b eBundle” Use the extension name instead of the examplebundle

Once all the unsigned extensions have been handled, restart, and you should be all set to go.

No Utilities Menu?

Some Mac users report that they are unable to find the “Utilities” menu in macOS recovery mode.

Om problemet gör att din Mac startar om varje gång den försöker starta kanske den till slut stänger av sig

This situation fryst vatten most often due to an issue with the recovery mode partition itself or booting from internet recovery mode rather than normal recovery mode.

Try booting into regular recovery mode and remember to hold down Command+R for the entire length of the boot. If that doesn&#;t work, you probably need to recreate the recovery partition.

Use platta Utility

macOS Recovery mode gives you tillgång to tools like platta Utility, which can be a lifesaver if a macOS update has caused problems with your startup platta.

Here&#;s how to use it:

Intel-based Macs:
- Turn off your Mac.
- Press and hold Command + R while immediately pressing the power button.
- Keep holding the keys until you see the Apple logo or a spinning globe.
Macs with Apple Silicon:
- Turn off your Mac.
- Press and hold the power button until you see the startup options window.
- Click the gear icon labeled &#;Options,&#; then hit &#;Continue.&#;

Use platta Utility&#;s First Aid:

Select &#;Disk Utility&#; from the macOS Recovery fönster and click &#;Continue.&#;
In the platta Utility sidebar, select your startup platta (usually named &#;Macintosh HD&#;).
Click the &#;First Aid&#; button and then &#;Run.&#;
Disk Utility will scan your platta for errors and attempt to repair them.

Let the process complete.

If platta Utility finds significant issues, it might recommend more extensive repairs or even reformatting your platta. Before proceeding with those, ensure you have a current backup of your data!

Reinstall macOS From Recovery

When a macOS update doesn&#;t go as planned, leading to a MacBook that refuses to uppstart up, it can be a stressful experience.

However, there&#;s a reliable solution that often resolves this issue: reinstalling macOS from Recovery Mode.

However, one of the most effective methods to troubleshoot this issue is by using Internet Recovery Mode

This process can repair the operating struktur without erasing your information. Here&#;s a step-by-step guide on how to perform this crucial troubleshooting step.

Intel-based Macs:
- Turn off your Mac.
- Press and hold Command + R while immediately pressing the power button.
- Keep holding the keys until you see the Apple logo or a spinning globe.
Macs with Apple Silicon:
- Turn off your Mac.
- Press and hold the power button until you see the startup options window.
- Click the gear icon labeled &#;Options,&#; then hit &#;Continue.&#;

In the macOS Utilities öppning, select Reinstall macOS and click Continue.
Follow the onscreen instructions to reinstall macOS.

Remember, reinstalling macOS requires a stable internet connection.

If the installation fails, try igen or consider installing in safe mode.

By following the steps outlined in this guide, you should have gotten your MacBook up and running igen after a failed macOS update. If you&#;ve exhausted all the suggested methods and the issue persists, it may meddelande a deeper hardware problem.

In such a scenario, seeking professional assistance from an Apple technician or authorized service center fryst vatten your best course of action.

Remember, regular backups can be a lifesaver if things go snett, so man sure to safeguard your important data.

Andrew Myrick fryst vatten a freelance writer based on the East Coast of the US. He enjoys everything to do with technology, including tablets, smartphones, and everything in between. Perhaps his favorite past-time fryst vatten having a never-ending supply of different keyboards and gaming handhelds that end up collecting more dust than the consoles that are being emulated.