Mac pro freezing on startup

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Most common Mac slow and freeze reasons and fixes

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macOS Mojave Freezes or Stops Responding, Fix

Hi, thanks for your support. I tried to reset preferences, but it does not work.

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This is the solution: "Delete your profile directory from your documents directory. Thank you!

Same problem for me. Same problem here. Uninstall Neat to see if that helps. Thanks, Kevin. This looks like it has done it! Continue this process of reconnecting one peripheral at a time and then restarting your Mac until you find the bad peripheral. Remember that the problem can also be a bad cable, so if you plug a peripheral back in and it causes the gray screen issue, try the peripheral with a new cable before you replace the peripheral.

Swap your mouse and keyboard with a known good pair, and then restart your Mac. If you don't have spares, just disconnect them and restart by pressing and holding the power key. If your Mac gets to the login screen or desktop, then you'll need to determine whether the problem is the mouse or the keyboard. Try plugging in one at a time and then restarting to confirm.

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Start your Mac using the Safe Boot process if no peripheral or cable appears to be at fault. To do that, first disconnect all of the peripherals, except the mouse and keyboard. During the Safe Boot, your Mac performs a directory check of your startup drive. If the drive directory is intact, the OS continues the startup process by loading only the minimum number of kernel extensions it needs to boot.

If your Mac successfully starts up in Safe Boot mode, try restarting your Mac again in normal mode. If your Mac starts and makes it to the login screen or the desktop, then verify that your startup drive is working correctly. Chances are the drive has some issues that need to be repaired. You can use Disk Utility's First Aid tools to check and repair your drive; you may even need to replace the drive. For instance, sound levels are set to the default, the internal speakers are set as the source of audio output, and the display options and brightness reset. If it comes on normally, reattach your peripherals one at a time, restarting the Mac after each, to verify that none of them caused the original gray screen issue.

Remove all but the minimum amount of RAM from your Mac. If it does, then one or more pieces of RAM have failed, and you'll need to replace it.

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However, you should be able to continue working with your Mac until you get the replacement RAM. Unfortunately, we're getting to the point where the troubleshooting steps will likely cause you to lose some, if not all, of the data on your startup drive. So, before we go there, be sure to try this RAM fix first.

My Mac Keeps Crashing. How Do I Solve the Issue?

Repair the startup drive by booting to external media, like an install disk. This verifies if the startup drive is having problems. Start from the Recovery HD :. If at this point you successfully started your Mac but the repair process didn't work, the startup drive may need to be replaced, which involves reinstalling the entire operating system. If you can't repair your startup drive using Disk Utility, try a third-party drive utility. If you do repair the startup drive, it may need to be replaced in the near future. Boot into single-user mode to repair the startup drive. One of the less well-known special startup modes that a Mac can operate in is known as single-user. This special startup mode boots the Mac to a screen that displays information about the startup process.

The display looks like an old-fashioned terminal from the days of mainframes and time-share computing systems, but it's more akin to the startup sequence in many Unix and Linux operating systems. In fact, many of the same commands are available from the prompt. When in single-user mode, the Mac doesn't automatically load the GUI, including the Desktop; instead, it stops the boot process after launching the basic OS kernel. Remove or replace the startup drive, or take your Mac to an authorized service center, such as the Genius Bar at an Apple store.

If you are unable to start your Mac with any of the methods listed above, you may have a damaged startup drive or another internal component that's preventing your Mac from booting. Share Pin Email.