follow url After the Apple logo appears, it might take longer than usual to reach the login screen or your desktop. This is because your Mac performs a directory check of your startup disk as part of safe mode. To leave safe mode, restart your computer without pressing any keys during startup.
Some features of your Mac aren't available when it's started in safe mode, so after you're done using safe mode you should restart your computer normally. You can't capture video in iMovie and some other video apps. Some audio input or output devices might not work. Home Questions Tags Users Unanswered. Here are the symptoms: The MacBook Pro would hang with a "white screen" during the boot process. Booting recovery mode did not work, as far as I remember.
The problem has been solved at Gravis and Apple's non-open diagnostics tools: The hardware was actually broken and I got a free replacement. Turned out to be exactly that. GPU here - can confirm broken. Will be replaced.
Kevin Grabher Kevin Grabher 5, 1 1 gold badge 16 16 silver badges 23 23 bronze badges. I was able to get a "no parking" sign, but other than that, nothing.
No parking sign? Just my 5c, may have nothing to do with, just a wild guess. So how about just detaching all peripherals and try booting again Garex Garex 4 4 silver badges 8 8 bronze badges.
Follow these steps to start up into safe mode. From Apple Support pages, provided from experience. Elk Vermin Elk Vermin 1. Hi, Welcome to Ask Different.
Check out a step-by-step guide to fix a white screen on Mac. If your computer fails to boot, try these proven ways to bring it back to life. When you see the Apple logo, release the Shift key. Once you boot using safe mode, the. on-screen, then release. Or hold down Option-D at startup to startup from the Apple.
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Then turn it on. I have fixed a few machines by slaving then to my mac via Target disc mode and clearing the extensions folder in Library in root. This was gig heavy so left machines on overnight…. August 4, at am. May 23, at pm. Deeply grateful to you! Even though it didnt boot completely in Safemode, it shutdown properly after displaying white screen for a while.
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. 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. 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.
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