1. Dark System Alpha Mac Os X
2. Dark System Alpha Mac Os 8

After Dark is a series of computer screensaver software introduced by Berkeley Systems in 1989 for the Apple Macintosh, and in 1991 for Microsoft Windows. Following the original, additional editions included More After Dark, Before Dark, and editions themed around licensed properties such as Star Trek, The Simpsons, Looney Tunes, Marvel, and Disney characters.

1. Oct 12, 2018 The Dark Mode theme available in modern macOS versions offers a unique visual interface and desktop environment to work in, shifting nearly all onscreen visual elements to dark grays and blacks. For many Mac users, the Dark theme is perhaps the most popular new feature to arrive in MacOS Mojave, Catalina, and Big Sur, and the new user interface.
2. Starting with macOS (10.16 'Beta'/11.0) 'Big Sur', the menu-bar and system tray no longer honor the Desktop dark-mode preference, making it difficult to properly theme a system tray icon for this Desktop. Previously, using a shell command default read, the dark mode could be detected: defaults read -g AppleInterfaceStyle # 'Dark'.
3. Enabling Dark mode on the new macOS Mojave is simple and straightforward. To get going, click on System Preferences from the menu and choose General. Here choose the second option under ‘Appearance’ to toggle into dark mode. You will also find a set of custom accent colors that you can choose from in the settings here.

Today we'll discuss the issue of black screen on Mac and tell you the reasons and relative solutions. When you try to wake the Mac from sleep, the iMac/MacBook screen goes black and unresponsive. Even worse, the Mac screen goes black randomly and ruins the files that you was working on. If your MacBook Pro/Air, iMac is stuck in black screen and doesn't respond, check out these solutions.

You May Need: Top 5 Data Recovery Software for Mac/PC

Why Does My Mac Go Black?

The possible reasons why Mac screen goes black could be listed as follows:

1. Battery Drain

Running out of battery is one of the most common reasons why your Mac screen goes blank. Even if your Mac is plugged in, a bad battery or a faulty cable can stop your Mac from charging and thus the Mac showsss black screen and becomes unresponsive. So the first thing you should do is to check the Mac’s battery and charging cables.

2. Display Issue

In most cases, the Macbook or iMac goes black on startup. However, the activity indicator, fan or bootup noises still work which indicates your computer has turned on. So it seems like a problem on the Mac screen.

3. Incorrect Disk Permissions

The permissions on Mac control users and system processes's access to the files. If disk permissions are incorrect, it could also make your Mac go black screen or unable to boot up.

4. Login Items

Some login items in auto startup list stop your MacBook from booting up normally.

5. Bugs in An App

A bug or a glitch in apps, especially third-party apps, could cause the blank screen. If the Mac black screen of death happens when you are using an third-party apps or you recently install a new app, the problem may be caused by the app.

5. macOS Operating System

The upgraded operating system might produce compatibility issue which might sometimes result in the black screen. Also, there are known bugs in macOS that could cause black screen of death.

We have talked about the reason of black screen. Next we would like to show you a couple of methods to fix the black screen issues on MacBook/iMac.

How to Fix Mac in Black Screen

Method 1: Check Mac's Battery

You could check things as follow:

• Check if your charger cable is undamaged and still connected.

• Check if the indicator light is on.

• Check if your Mac produces any noise from the fans or drive.

If the indicator light is off and there is no noise, your Mac probably runs out of battery. Keep your Mac plugged in and charge. When the Mac can boots up normally, check your battery cycles to see if it needs to be replaced. You could do this by following steps here.

STEP 1: Go to Apple Menu on the top left.

STEP 2: Navigate to About this Mac>System Report>Power.

STEP 3: Check the items: cycle count and condition for your battery. If the condition is poor or bad, You’d better purchase a new battery.

If you have ruled out all the things above,then move to next method for help.

Method 2: Restart Your Mac

In most of the cases,restarting your Mac might help fix the problems. If your MacBook is in black screen, try to open and close the lid and press any key on the keyboard or touch the trackpad first. If the MacBook screen still won't light up, you could try to force restart your MacBook.

OPTION 1: Long press Power button for around 6 seconds, then wait for 15 seconds till Mac shuts down and press the Power button again.

OPTION 2: Press Control+Eject keys and if a dialog box shows, press Enter to shut down your Mac. Then press power button to restart it.

OPTION 3: Press Control+Command+Eject to force restart your Mac.

Method 3: Restart Your Mac with Specical Keys

Some users found out a specific key sequence can get your Mac out of black screen of death quickly . Here are what you have to do:

STEP 1: Press power button once which will normally show you a shut down dialog box, however, you won't see it as you screen is black.

STEP 2: Press S key, which will put your Mac to sleep. Then long press the power button for 6 seconds.

STEP 3: Wait for 15 seconds and press power button to restart it. Your Mac screen will light up and start up normally.

Method 4: Reset the NVRAM/PRAM

If the Mac is still unresponsive and shows black screen or the Macbook Pro/Air screen goes black intermittently, you need to reset the NVRAM/PRAM to see if it works.

STEP 1: Hold power button for 6 seconds to shut down your Mac.

STEP 2: Press power button. Followed closely by holding down Command+Option+P+R.

STEP 3: Release the keys if you see Apple logo screen or hear other startup chimes.

To learn more about resetting NVRAM/PRAM, please read Full Guide to Reset the PRAM & SMC on Your Mac.

Method 5: Disable Suspicious Login Items

Dark System Alpha Mac Os X

Some apps would launch automatically on startup without your consent. Here, we could identify such startup apps by running MacMaster. FonePaw MacMaster is a multifunctional tool to manage apps and data on Mac. One of its feature is to check all of the built-in as well as the third-party extensions, plugins, apps on your Mac, and then enable or disable them in one single click. Let’s see the guide of disabling suspicious login items:

STEP 1: Download and install MacMaster on your computer.

STEP 2: Go to Extensions on the left and click Scan to scan extensions on Mac.

STEP 3: After scanning, choose Login and find the apps that start at login without your permission.

STEP 4: Click the circle button beside the information of the app. If the circle turns gray, it means that the app has been successfully disabled.

Method 6: Reinstall the macOS

Black screen of death on MacBook could be associated with software issues. For this reason, we need to update all apps to their latest versions including the macOS.

However,before you update macOS,you need to make reparation as listed below:

• Backup your Mac. You could use Time Machine to backup your Mac. iCloud or USB would be also choices to backup your Mac.

• Check up the generation of your Mac or MacBook to rule out compatibility issue.

• Free up storage space on your Mac. You could try to store data in iCloud, optimize storage,empty trash or reduce clutter to achieve the goal.

Dark System Alpha Mac Os 8

Having done all the things above, you can download the latest version macOS Catalina, Mojave, High Sierra from the Mac App Store to reintsall the operating system. You can also clean install macOS from a bootable drive. If you have any data loss after reinstalling macOS on the computer, you can use FonePaw Data Recovery to recover photos, files, music and more.