haadeli.blogg.se - Slow mac computer troubleshooting

Immediately press and hold the Command key and "s" key for single-user mode.Press the power button to start the computer.To leave Safe Mode, restart your computer without holding any keys during startup. This indicates that your computer is performing a directory check as part of Safe Mode. Release the Shift key when you see the gray Apple logo and the progress indicator (looks like a spinning gear).Īfter the logo appears, you should see a progress bar during startup.

The Shift key should be held as soon as possible after the startup tone, but not before the tone.

Immediately after you hear the startup tone, hold the Shift key.

To start up into Safe Mode (to Safe Boot), follow these steps. Some firmware updates may reset your PRAM as part of their installation process, which will means you will have to reset the affected settings after the installation. If you choose to reset your PRAM, you may need to set your display, time zone, startup volume, and other affected settings using System Preferences (accessible under the  menu).

Hold the keys down until the computer restarts and you hear the startup sound for the second time.

You must press this key combination before the gray screen appears

Press and hold the Command-Option-P-R keys.

You will need to hold these keys down simultaneously in Step 4

Locate the following four keys on the keyboard: Command (⌘), Option, P, and R.

Click the 'Repair Disk Permissions' button.

In the left-hand pane, select a volume you wish to run Repair Permissions on (Remember, the volume must contain a bootable copy of OS X).Launch disk Utility, located at /Applications/Utilities/.If your Mac is slow, is stuck at 50% charge on the battery, won't let you connect to a wireless network, or is generally acting weird, there are some troubleshooting steps you can try to resolve the problems.