Try Safe Boot: Other startup problems might be solved by a Safe Boot.If the evidence points to a device, check its cables, update its software, or contact the manufacturer for help. If your Mac starts up without a problem, test peripherals one by one. Unplug everything and restart to see what happens. Unplug peripherals: Sometimes peripherals-keyboards, trackpads, webcams, microphones, external drives-are to blame.Or, see Crucial’s step-by-step guides.įor problems with startups-say, your Mac gets stuck on the gray startup screen or you hear the boot up chime again and again, but your Mac doesn’t boot up-try these tricks first: If it’s possible to add more RAM, click the Memory Upgrade Instructions link. If you can’t upgrade your Mac’s RAM, you won’t see the Memory section. (You won’t see a Memory button if it’s impossible to upgrade the Mac’s RAM.) ④ Choose Apple > About This Mac and click Memory to see how much RAM you have and whether you can add more. To see how much you have, choose Apple > About This Mac and click Memory ④. Add RAM: OS X and your apps can demand a lot of RAM if everything is running slowly, and it’s not due to a full drive, you might need more.③ El Capitan’s Disk Utility gives you a visual overview of what types of files fill your disk. To home in further on oversized files, try an app like Id-design’s WhatSize. El Capitan’s version of Disk Utility (in /Applications/Utilities) gives you an overview of the types of files that are hogging your megabytes ③. Free up disk space: If your disk is nearly full, your Mac may run slowly-and apps may even crash.(If you don’t see an update you expect, Press Command-R to refresh the view.) Check vendor Web sites for apps you got elsewhere. Go to Apple > App Store and click Updates to check for, and then install, new versions of software from the App store. Update your software: If your problem is a software bug, a software update may help.If force-quitting apps and restarting your Mac doesn’t stop a slowdown problem, you might need to do more: Tip: The best way to prepare for disaster is to have good backups see Backing Up Your Mac: A Joe On Tech Guide. If your Mac still won’t start, take it to the Genius Bar. Did you recently install new RAM? Take it out and see if the Mac turns on without it.(If you have another power cable-or, for laptops, power adapter-try that.) Is your power cord damaged? Check for chew marks if you have a kitten, puppy, or other teething beastie.Does the electrical outlet work? Plug in a lamp to test it.(See Create a Troubleshooting Account, in the previous chapter, for details.)Īre you staring blankly at this chapter because you can’t even get your Mac to turn on? Try this: Log in with your troubleshooting account: Still having trouble? Log out of your current account, if logged in, and then log in with the troubleshooting account to find out whether the problem is limited to your user account.If that doesn’t work, press and hold your Mac’s Power button until the Mac shuts down (unfortunately, losing any unsaved work), and then press it again to restart. If that fails, press Command-Control-Power button to force a restart (with the opportunity to save unsaved work first). Restart your Mac: If you can’t force-quit, choose Apple > Restart.② Stalled app? Press Command-Option-Esc, select the offender, and then click Force Quit. Usually an app will behave once relaunched. Select the bad app in the list, and then click Force Quit. Choose Apple > Force Quit (or press Command-Option-Esc) ②. If other apps respond, you’ll want to force the offending one to quit. Try to switch to another by clicking its Dock icon or pressing Command-Tab to use the Application Switcher. Force Quit: First see if the problem is limited to one app.Is your problem an endlessly spinning beach ball? Try these tricks first: ① Using El Capitan’s Disk Utility, you can now repair your disk even if it’s the active startup volume. El Capitan comes equipped with the tools you need to face everyday troubleshooting problems ①. Or, you find yourself staring at an unchanging gray screen. Maybe the heartache begins with errors when you try to save or open a file.
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