Use Disk Utility to check the status of your hard disk and make sure that you don't have a failing hard drive.
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Shut down your computer; restart and then hold down the "Command-R" keys until you see the OS X Recovery utility screen. Select the "Disk Utility" option and select the "First Aid" tab. Select your hard drive from the sidebar and then click "Repair" to diagnose and repair the disk.
If you have a failing hard drive, a notice displays telling you to back up your system and reformat the hard drive. Reinstalling Mac OS X fixes any corrupt system files and repairs the operating system without deleting your files, applications and other data. Restart and hold down the "Command-R" keys. After you access the OS X Recovery utility, you may need to select a Wi-Fi network so that your Mac can download the latest installation files. Select the "Reinstall OS X" option, click "Continue" and then follow the onscreen prompts to complete the re-installation of your operating system.
Safe Mode Starting in Safe Mode also includes an automatic disk check to verify and repair any issues with the operating system software. Disk Utility Use Disk Utility to check the status of your hard disk and make sure that you don't have a failing hard drive. Reinstall Mac OS Reinstalling Mac OS X fixes any corrupt system files and repairs the operating system without deleting your files, applications and other data.
Apple MacBooks are the leading products in the marketplace.
MacBook's applications make the best use of it's hardware potential. However, it's not a secret that crashes may happen even in Apple products. MacBooks are not an exception, there are plenty of circumstances when errors and crashed may occur.
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Note that in the majority of cases these crashes are not a major issue and they can be easily fixed even by less tech savvy computer users. The quickest fix when troubleshooting MacBook issues is trying to restart your device.
Unluckily, if your issue is related to MacBook's boot sequence, simple restart would not be an option. If your MacBook gets stuck when booting up this doesn't automatically mean that your computer has a hardware issue.
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Try following these easy tips on how to solve or troubleshoot this problem. In this article we will describe the most common solutions for this specific problem. These steps might also help you when fixing or diagnosing any future issues with your MacBook including software and hardware crashes. Table of Contents:.
How to Fix a Mac That Stalls on Gray Screen at Startup
Computers boot failure are quite serious issue, and may result in hard drive replacement. No one would want to loose their data, so the very first step you should take, ensure you have up-to-date backup file, otherwise create at least one. We recommend to create and store couple of them in unrelated storage, best option would be external drive and cloud storage.
Since your MacBook is unable to boot, you will need an external data traveler to save a backup file.
1. Startup issues
Once you are ready to create a backup file attempt to access Mac's Recovery Menu:. Alternatively you may use another Apple computer to make a copy of date using target disk mode, however Thunderbolt or FireWire connections is required in both device for this method. When you connect your Mac through Thunderbolt or FireWire one of device became as external hard disk on the other.
The first and easiest step to diagnose your problem maker, would be to disconnect all unnecessary peripherals, if possible, leaving only the Apple branded keyboard and mouse. There are cases when the problem is caused by a certain combination of connected peripherals. If disconnecting all peripherals could not solve the boot issue try steps below. Safe mode is one of the most useful option, whenever you encounter with computer problems, especially if it's not an hardware related issues.
5 common MacBook problems and how to fix them - CNET
Note: be patient when loading in safe mode, it takes much longer than to boot in a usual way. If you reached this step, it means none of tips above helped you, so its probably something with your hardware. The most frequent case it's your hard drive, luckily MacBooks is able to solve some issues related to hard drive by him self. First what you need to perform in order to command your Mac to try resolve issues is to enter Recovery mode again. As it was mentioned you need to hold down Command and R keys while launching your laptop. All Macs with OS X Mountain Lion or newer came together with the included Apple Diagnostics feature which test your Mac for hardware issues and suggests available solutions.
To launch Apple Diagnostics Disconnect all external devices except keyboard, mouse, display, Ethernet connection if applicable , and connection to power adapter. Make sure that your Mac is on a hard, flat, stable surface with good ventilation. Shut down your Mac. Turn on your Mac, then immediately press and hold the D key on your keyboard. Keep holding until you see a screen asking you to choose your language.