Check also for lights like the sleep indicator light, Caps Lock key, or backlit keyboard, if you have one. Check for power-related issues such as sounds from the fan or hard disk among other startup sounds.Here are some things to check for when your Mac won’t turn on, or it powers on but doesn’t complete the startup process: What to Do When Your Mac Won’t Turn on or Start up in Safe Mode You can use it to resolve any problems that keep your Mac from starting up or startup disk related issues, including apps not launching or those causing your computer to crash, freeze, or shutdown.
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Safe Mode can get your computer up and running all over again whenever issues brought about by corrupt data or apps, damaged fonts, and preference files, or software installation issues arise.
That means only a minimal number of preferences, system extensions, and fonts that need to run will start up with your computer so that you can isolate the issues and troubleshoot accordingly. So you can test whether it’s the whole system or a particular program that’s causing issues. While in this mode, your Mac starts without loading the additional third-party programs. It helps you figure out the problem based on how the computer reacts to the Safe Mode environment. Safe Mode or safe boot is a macOS diagnostic mode designed to fix several problems in your Mac.Īctivating safe mode allows you to troubleshoot any problem that prevents the operating system from functioning normally.
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