Oct 15, 2016 This doesn’t even require you to set up Screen Sharing in the System Preferences. You can simply share your screen with another Mac, and even control it. Here are the steps you can follow to get this up and going: Open iMessage on the Mac that you want to share the screen from, as well as on the Mac that you want to share the screen to. Oct 09, 2017 If you want to share your screen on Mac then it’s easy – either using the macOS screen sharing tool or via easy to use screen sharing apps. Macs already have a built-in screen sharing tool. Since OS X 10.4, Macs have a tool called Screen Sharing which makes it simple to screen share on a Mac.

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Chime App Screen Share Doesn't Show Correct Screen Mac Computer

Do you still suffer from the problem of iMac screen going black? This post will show you how to solve it.

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“I just got an iMac 20″ 2.1GHz (2006) at first it ran well no problems, but now the screen randomly goes black, the system still runs just black screen, if left alone it will go to sleep and can be awakened just fine as if nothing happened but later it’s black again. any advice would be appreciated.”

iMac screen going black is a quite common malfunction when we use Macs. I have collected several high frequent scenes when the iMac screen turns black:

Scene 1. iMac screen goes black randomly, and after turning black, Mac will shut down automatically. When you restart Mac, it will get right.

Scene 2. iMac screen turns black continuously no matter how many times you restart it.

Scene 3. When you are doing something on Mac, for example, watching a movie, the screen goes black suddenly, but the system runs still in the background.

Scene 4. It is ok with turning on MacBook Pro plugging in AC adapter, however, when you unplug the power cable, the MacBook screen will immediately go black and shut down.

These four situations are not all about iMac screen changing black. But we can solve all of them with the following method.

Also Read:
How to Copy iPhone Photos to Mac >
How to Make Your Mac Run Faster >

How to Fix iMac Screen Goes Black

When we encounter any one of the above-mentioned situations, or others not mentioned about iMac screen going black, we can fix it with just three simple steps.

Step 1. Shut down Mac, if it is still running. And make sure that the AC adapter is connected to Mac.

Step 2. Start Mac > Press command + option + P + R simultaneously > Stop pressing after hearing open sound four times, and iMac screen will be normal.

Step 3. If step 2 does not work, don’t worry, here is the other solution. You need Press shift + control + option + power button simultaneously for one or two seconds. After stop pressing four keys, push power button to start Mac, and iMac screen will not go black.

How to Fix iMac Screen Goes Black − Step 3

Bonus Tip: How to Remove Mac Junk with MacClean

It is necessary to clean computer junk regularly, no matter you are a Window computer user or a Mac computer user. Unlike remove junk in Windows, most users do not know how to clean system junk or other junk in Mac. In this tip, we recommend a safe and easy tool to solve this trouble – MacClean.

MacClean is an easy-to-use OS X optimizing tool that works on all Mac computers: MacBook, MacBook Pro/Air, iMac, Mac mini, Mac Pro, etc. It can scan your Mac to tell how many junk here in your Mac computer. And you can choose to clean System Junk, Internet Junk or other junk such as malicious cookies according to your needs. To scan your Mac, download MacClean now.

How to Scan and Clean Mac Junk with MacClean

Step 1. Download MacClean on your Mac.

Step 2. Open up MacClean > Choose System Junk, Internet Junk or other terms according to your need > Click Scan to go.

Step 3. After scanning, MacClean will list all the junk that is ready to be removed, you can clean the .

You can also use this tool to speed up your Mac, if you find your Mac is very slow, you can refer to this guide: How to Speed up Your Mac >

The Bottom Line

iMac screen going black will not bother you any more with this method step by step. And if you would also like to know how to tell if your Mac has a virus, try MacClean.

Product-related questions? Contact Our Support Team to Get Quick Solution >

So, you turn on your Mac. You hear the trusty chime, and then nothing else. You wait for what must seem like an eternity to Mac users and all you get is a white screen. Or, maybe you get the ever hopeful Apple logo and hold out faith that things will come on line just as they always do. After all, what would you do if they didn’t?

Not only can a white screen slow down a project or an idea, but is can be daunting to the inexperienced Mac user. Don’t worry; Mac’s are user friendly, with the right instructions.

A white screen is sometimes indicative of an issue or possible error with the OS X operating system. When this happens, your computer stops working accurately and goes into a suspended mode that makes the screen white.

There could be a number of reasons that your Mac won’t properly boot up. There are also a number of helpful pointers that may be useful in fixing the problem.

This article will cover how to repair the white screen problem so that your Mac will be able to function as usual.

The devices this article applies to include the MacBook Pro, MacBook Air, MacBook, iMac and the Mac Pro.

In case the Mac becomes inaccessible as a result of whatever the issue causing the white screen, make sure you keep a backup of whatever information you have been working on saved. Just in case, you should be trying to back up your computer now before you do anything else. This can still be done even when you Mac is not booting. (You can totally skip this step, if you already have backups). You should be capable of backing up you Mac using OS X Recovery.

This Is How to Backup a Mac That Does Not Startup:

Make sure you connect an external hard drive is attached. This will be needed to back the Mac drive up onto. It is important to remember that you have enough available memory on the external drive to store everything you are about to back up from the Mac internal drive.
Shut Sown your Mac
Turn on the Mac > right after it starts, hold down “Command” and “R” keys, till you see the Apple logo is on the screen
Next, wait until the OS X Utilities Window appears
Select the “Disk Utility” Button and click
Note in the side bar to choose the drive, which you would like to back up.
Locate “Verify Disk” and click, if the verifying disk has a problem, click on “Repair Disk”
Now, in the Toolbar, “New Image” icon will appear
Select your external hard drive to save. This should generate a compressed disk of all of your disk’s contents

Keep in Mind that these steps can differ slightly depending on the version of OS X you are working with

Fixing the White Screen on a Mac

Please attempt to re-boot your Mac after each step to see if the issue has been resolved.

Force shut down Mc by holding the power button down until the Mac turns off. Disconnect everything connected to your Mac. All printers, scanners, USB’s and even external speakers, leaving the keyboard and mouse attached. Try re-starting your Mac while everything is disconnected. If your computer re-starts without having any issues, that means that the culprit is like

2021.08

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