Dec 15, 2023 · Check your power supply and power cable. Check if your issue is resolved after each step. Unplug the power cord from Apple TV, wait 30 seconds, then plug it back in. Plug the power cord into a different power outlet or power strip. If possible, use a different Apple TV power cord. Turn the power back on and test it out. TL;DR: Thermostat malfunction is a common, easy to diagnose and fix issue. It is worth it to start your troubleshooting from here. 2. Tripped Circuit Breaker. A tripped circuit breaker can cause a thermostat to shut off, leading to the air conditioner not turning on.It sounds from your description that there may be an issue with the hard drive. Try following the troubleshooting steps below, and if the issue persists, we've included information to contact an Apple Store Genius or Apple Authorized Service provider to physically inspect the computer for you. If your Mac won‘t turn on.Dec 28, 2020 · Here's a quick tutorial on how to fix your MacBook that won't turn on in 3 minutes. MacBook not turning on fix is here!Also Try Tenorshare ReiBoot - https://... That's the way it's set up. If you want it not to turn on when pressing any key in keyboard, go to the big Apple logo at the top left of your screen, then system preferences, then Energy saver (looks like a light bulb), there you should be able to turn off "wake when any key on the keyboard is pressed", etc....you can also tell it how long to ...See Check the condition of your Mac laptop’s battery. Inspect the hardware: Make sure everything is plugged in and undamaged. Check the port, the charging cable, the power adapter, and the AC wall adapter. If anything is damaged, stop using it. Let it cool down: Move your Mac to a cool, well-ventilated spot.How to hard reset your Mac. If you're having trouble with AirDrop on your Mac, you can try a hard reset as well by following these steps: Click the Apple icon in the far left of the menu bar. Click Restart. (Image credit: iMore) Once you've rebooted, try connecting it in again. If it works, you're good. If not, there are a few more things to check.Imac Pro Catalina Issues After Catalina, my Imac Pro: Will not shut down when "Shutdown" is selected (have to use power button on back) Shuts down when "Sleep" is selected (intermittently) The top menu bar takes minutes to show up on startup Locks up when Restart is selected (Have to use power button on back) "About this mac", "System …You’re just as likely to use a MacBook on your lap as you are to use it at a desk. That’s why it’s important that you’re able to charge your MacBook battery to keep it as a portable computer. Unfortunately for some users, their MacBook says “Not Charging” in the menu bar when it’s plugged in.Check your system’s sleep settings. Make sure the sleep settings are set the way you want. On your Mac, choose Apple menu > System Settings, then click Lock Screen in the sidebar. (You may need to scroll down.) Open Lock Screen settings for me. To set the amount of time that should pass before your computer goes to sleep, do one of the following:This step is advised as a battery with very low charge, or is failing, may produce symptoms that emulate a boot loop. If the problem fails to stabilise after an hour, whilst still connected to the Power Adapter, attempt a forced restart of the iPad: On an iPad with a Home button: Press and hold the top button and the Home button at the same time.Forgetting all of the connected Bluetooth devices is easy and you can easily reconnect them. Step 1: Click the Apple icon and click “System Settings.”. Step 2: Choose “Bluetooth” from the side menu. Step 3: Right-click each connected device and …To avoid this happening, I'm turning off Voiceover in System Preferences > Accessibility (instead of Command+F5, clicking the X in the Voiceover dialog or pressing the Esc key). This seems to be working, I'd let you know if this doesn't work). of 1. VoiceOver turning itself on after I start my Macbook Pro (MacOS 10.14 Mojave).Plug in the MagSafe power adapter to a power source, connecting it to the Mac if its not already connected. On the built-in keyboard, press the (left side) Shift-Control-Option keys and the power button at the same time. Release all the keys and the power button at the same time. Press the power button to turn on the computer.A friend recently had a problem where his Apple Watch stopped unlocking his Mac, and it’s something I’ve experienced, too. Read on to learn the fix that’s worked reliably for me.Aug 20, 2023 · If your Mac has no built-in display, make sure that your external display is connected to power, connected to your Mac, and turned on. Press and hold the power button on your Mac for about 10 seconds. (Every Mac has a power button. On laptop computers that have Touch ID, press and hold Touch ID.) It is estimated that 1,56,849 Big Macs are sold in the United States at McDonald’s locations each day. This calculates out to 550 million Big Macs sold in the United States every y...After an update to iOS17 on 13 Pro Max it was working as intended. Now I’m on 15 Pro Max with 17.0.2 (moved using transfer from phone) and sleep mode does not turn off anymore. I tried to edit/remove the sleep schedule. I even deleted the sleep focus mode, disabled sleep tracking on Apple Watch and configured everything again.Here’s how to change these settings and fix the screensaver not working on macOS Sonoma. Time needed: 2 minutes. Change Screensaver Settings on Mac. Open System Settings on your Mac. Head to the ...ref: If your Mac doesn't turn on. If your Mac doesn't turn on - Apple Support. In or out of warranty you can get a free over the counter 'Apple Service Diagnostics' test …If your Mac doesn't start up all the way or needs you to do something during startup, it might stop at one of these screens. Question mark. Find out what to do if your Mac starts up to a question mark. Circle with a line through it. Find out what to do if your Mac starts up to a circle with a line through it (prohibitory symbol). Globe with ...Mar 11, 2022 · To hard restart a MacBook Pro with an M1 chip, press and hold the power button for 10 seconds. In the startup window, select Options > Continue > Disk Utility. To perform a hard restart on a MacBook Pro with an Intel chip, press and hold the power button for 10 seconds. Then press and release the power button and quickly press and hold Command ... Feb 2, 2024 · At the login window, enter your user account password to log in to your Mac. If FileVault is turned on, this also unlocks your disk. You might see a default desktop picture in the background, which might change to your chosen desktop picture when you select your account. The login window appears only after you log out of your user account ... You can check for the same by following these steps. Step 1: Press Command + Spacebar to open Spotlight Search, type System Settings, and press Return. Step 2: In the System Settings window ...Use Disk Utility to repair your startup disk. Select Disk Utility in macOS Recovery, then click Continue and follow the steps to repair your startup disk with Disk Utility. These steps also describe what to do if Disk Utility can’t repair your startup disk, or Disk Utility doesn’t see your startup disk. When complete, restart your Mac ...Camera on macbook pro not working My camera on my MacBook Pro 2019 w/ Touch Bar is not working with any of the apps (zoom, FaceTime, Photo Booth, etc) and the green light doesn't turn on. Also, in the system's report it says "no video capture devices were found". I've tried almost everything that other websites suggested like using …Figure Out Which Microphone Your Mac Is Using. Check the Sound Input Settings. Check the Microphone Permissions. Delete Problematic Apps. Reset the NVRAM/PRAM. Try Enabling Dictation. Check the Levels on Your External Microphone. Restart Your Mac. Apple MacBooks and many desktop Macs have built-in microphones.my macbook air stops powering on suddenly so what i did was visit a local tech who opened my mac, jumpstart the battery and it started working again. however it was again not powering on after a week so what i did was i bought tools and opened it myself. i disconnect and reconnect the battery, which fixed it temporarily. this is what i do every ...It is estimated that 1,56,849 Big Macs are sold in the United States at McDonald’s locations each day. This calculates out to 550 million Big Macs sold in the United States every y...Mac and cheese is a classic comfort food that is loved by people of all ages. Making it at home is easy and can be done with just a few ingredients. With a few simple steps, you ca...Use Disk Utility to repair your startup disk. Select Disk Utility in macOS Recovery, then click Continue and follow the steps to repair your startup disk with Disk Utility. These steps also describe what to do if Disk Utility can’t repair your startup disk, or Disk Utility doesn’t see your startup disk. When complete, restart your Mac ...You’re just as likely to use a MacBook on your lap as you are to use it at a desk. That’s why it’s important that you’re able to charge your MacBook battery to keep it as a portable computer. Unfortunately for some users, their MacBook says “Not Charging” in the menu bar when it’s plugged in.Click iCloud on the right, then click Find My Mac. (If Find My Mac isn’t in the list, click Show All.) If the Find My icon has a warning badge , turn on Location Services first. Click Turn On, then click Allow when asked to allow Find My Mac to use the location of your Mac. Optionally, turn the Find My network on or off.If you have any pending software updates, download and install them to potentially solve the overheating issue of your MacBook. If the overheating was caused due to any bugs in the system ...Jan 27, 2017 ... How to turn on the Macbook Pro with a non-working power button. First try to plug in the adapter, then hold down Ctrl + option + command + ...May 19, 2020 · Then try these solutions, whether or not your Mac has signs of power: Press and hold the power button on your Mac for 10 seconds, then press it again. Reset the System Management Controller (SMC). Make sure that your display's brightness is turned up. Mac notebook computers have a Brightness Up key on the built-in keyboard. First Steps. Before undertaking any of the more time-consuming solutions below, these are a few fundamentals to get you started. Perform a hard reset. Press …5 days ago · Go to Settings > General > Date & Time. If you're using an iPhone, you need SMS messaging to activate your phone number with iMessage and FaceTime. Depending on your carrier, you might be charged for this SMS. If a prompt appears stating "Your network provider may charge for SMS messages used to activate FaceTime and iMessage", tap "Turn On" to ... Mar 5, 2019 ... ... my store with given below link. https ... Turn On | Apple IMAC suddenly dead and does not turn on ... Mac computer won't start | SOLVED.Double-check hardware cables. Loose hardware cables could be a culprit for your Mac not appearing to turn on. Ensure that cables connected to your Mac and any … Check power connections. Make sure your power cable is undamaged and plugged securely into your Mac and a working electrical socket. If your Mac has no built-in display, make sure your external display is connected to a power source, connected to your Mac and turned on. Mac and cheese is a classic comfort food that is loved by people of all ages. Making it at home is easy and can be done with just a few ingredients. With a few simple steps, you ca...Aug 11, 2020 · Disconnect everything from your computer other than the power. When your Mac is off, press the left-side Shift + Ctrl + Opt keys and the power button at the same time. Hold all four keys for 10 seconds. Release all the keys and the power button at the same time. Press the power button to turn on your Mac. How to fix a MacBook won't turn on issue. Check power connections: Try unplugging and plugging your Mac back in. Boot up your Mac: Press and hold the power button for about 10 seconds. Unplug accessories: These include keyboards, mice, external HDs, printers, drives, USB hubs, and mobile devices. Reset the SMC: Press Shift + …Turn your Mac off and back on. Press and hold the power button on your Mac for up to 10 seconds, until your Mac turns off. (Every Mac has a power button. On laptop computers that have Touch ID, press and hold Touch ID.) Press and release the power button to turn your Mac on again. If the screen remains blank, continue to the next section.Sep 10, 2022 ... Share your videos with friends, family, and the world.In Windows, open Settings > Devices > Printers and Scanners, and select the device. Click "Remove Device." Now uninstall any installed print software that came with the device. Related: How to Reset the Printing System on Your Mac. In Mac, click the Apple menu > System Preferences > Printers and Scanners.A friend recently had a problem where his Apple Watch stopped unlocking his Mac, and it’s something I’ve experienced, too. Read on to learn the fix that’s worked reliably for me.May 29, 2017 · After the imac has not been touched for a while and the display goes to sleep, it did not turn back on. I tried moving the mouse and using the keyboard, but the computer screen stayed black (the only exception to this- when i hit the media play/pause/next/previous buttons, itunes did still play songs and i could hear them in the system speakers ... Your Mac might be turned on but appear to be turned off, even though it's connected to AC power and a working display. Follow these steps. Press and hold the power button on your Mac for at least 10 seconds, then release. If your Mac is …Press and hold the power button on your Mac for 10 seconds, then press it again. Reset the System Management Controller (SMC). Make sure that your display's brightness is turned up. Mac notebook computers have a Brightness Up key on the built-in keyboard. Unplug all accessories from your Mac, including printers, drives, USB hubs, …Press the Control, Option, and Shift keys for seven seconds. While holding the existing three keys, hold the Power key too. Hold for 7 seconds and release the keys. Now, click the Power key again ...Press your Mac's power button. It will be located somewhere different depending on the device. For Mac Pro: On the top. Mac minis, iMacs, Mac Studios: On the back. Look for the Power symbol on the button. This article will walk you through how to turn on your Mac with the power button and what to do if that doesn't work.Here's how to run the command in Mac Terminal to stop MacBook Pro from booting up automatically when the lid is open. Press down the Command + Option keys together to launch the Mac Spotlight Search box. Type Terminal in the box and press Return to open the Terminal window. Copy and paste the following command onto the Terminal …Feb 8, 2023 ... Another common cause of a Mac or MacBook that won't turn on is a dead battery. If your device is not plugged in, try plugging it in and see if ... You may see a default desktop picture in the background, which may change to your chosen desktop picture when you select your account. The login window only appears after you log out of your user account (Apple menu > Log Out) or restart or start up your Mac. If you're still logged in to your user account, you might see your lock screen instead. If your Mac has no built-in display, make sure that your external display is connected to power, connected to your Mac, and turned on. Press and hold the power button on your Mac for about 10 seconds. (Every Mac has a power button. On laptop computers that have Touch ID, press and hold Touch ID.)“I’m worth every penny,” says MAC Cosmetics as it wins another award for best high-end makeup brand. So, what makes MAC cosmetics so special? Let’s take a look at a few reasons why.... Jan 17, 2012 · Nevertheless, it is a procedure that still works. Hold down the Command, Option, and R keys with your left hand, and press the P key and Power key with your right all at one time. You should hold it until you hear the start chime twice (though sometimes this doesn't happen) and give your computer a chance to reboot. In Windows, open Settings > Devices > Printers and Scanners, and select the device. Click "Remove Device." Now uninstall any installed print software that came with the device. Related: How to Reset the Printing System on Your Mac. In Mac, click the Apple menu > System Preferences > Printers and Scanners.The following are possible causes why the headset is not charging or turning on: Damaged charging port. Faulty charging cable. Faulty battery. Follow the troubleshooting tips below to resolve a Razer wireless headset that is not charging: Ensure the charging cable is working and plugged in properly. Use a spare charging cable.Oct 20, 2023 · On a Mac with Apple silicon, turn it off, then press and hold the power button until you see the Startup Options screen. Now select your main drive, press the Shift key, and select Continue in Safe Mode . On older Macs, press the power button and immediately press and hold the Shift key. Aug 24, 2021 · On a Mac desktop with a T2 Security chip. 1. Shut down your Mac and unplug its power cord. 2. Wait 15 seconds before plugging the power cord back into your Mac. 3. Wait 5 seconds, then turn your ... What To Do When My MacBook Won't Turn on or Boot up (Intel & M1) There are some differences between these issues: A not turning on Mac means a Mac that is not responding at all after you press down the power button/Touch ID button.You don't hear a startup chime, a spinning fan, or drive noise, and there are no visuals on your monitor.If your Wi-Fi isn’t functioning correctly, enabling cellular data could fix your issue. To do this, go to Settings > Cellular > Safari and toggle it on. Alternatively, try turning off Wi-Fi and connect using cellular data only. If this works, it indicates a network issue with your Wi-Fi.Learn what to do if the built-in camera won’t activate or appear in an app on your Mac. Update your software. Make sure your software is up to date. Check Screen Time settings. If your Mac is using macOS Catalina or later and you use Screen Time, make sure your camera is turned on and apps that use the camera have time available.Part 1: Why is My Mac Not Turning on? There are various reasons why your Mac might not be turning on. Some common causes include: Power Issues: The most straightforward reason could be a power-related problem. It could be due to a drained battery on a MacBook or a faulty power outlet or power cable.Figure Out Which Microphone Your Mac Is Using. Check the Sound Input Settings. Check the Microphone Permissions. Delete Problematic Apps. Reset the NVRAM/PRAM. Try Enabling Dictation. Check the Levels on Your External Microphone. Restart Your Mac. Apple MacBooks and many desktop Macs have built-in microphones.With a Mac, there are several ways to restart manually: Hold down the power button for five seconds to shut down your device, then wait at least 15 seconds before pressing it again to reboot. Use CTRL+EJECT keys to open the dialogue box and press enter to shut down. After 15 seconds, press the power button to reboot.To avoid this happening, I'm turning off Voiceover in System Preferences > Accessibility (instead of Command+F5, clicking the X in the Voiceover dialog or pressing the Esc key). This seems to be working, I'd let you know if this doesn't work). of 1. VoiceOver turning itself on after I start my Macbook Pro (MacOS 10.14 Mojave).Also, check the power port on your Apple laptop for dust. This can prevent the connector from making a clean connection to the Mac and stop you from charging it up correctly. If your Mac isn’t ...Feb 24, 2020 · To do so, click the Launchpad icon in the Dock and head to System Preferences > Bluetooth. Next, click "Turn Bluetooth Off," and then click "Turn Bluetooth On." If it's enabled, you can also do this from the Bluetooth settings menu on the menu bar. Just click the Bluetooth icon, click "Turn Bluetooth Off," and then click "Turn Bluetooth On" to ... Why MacBook Air Won’t Turn On. If your MacBook refuses to turn on, whether that’s a MacBook Pro or Air, there can be a number of possible reasons, …Plug in your MagSafe power adapter. On your Mac's built-in-keyboard, press the (left-side) Shift-Control-Option keys and the power button at the same time. Release all the keys and the power button at the same time. Press the power button to turn on the computer. Note: While performing this procedure, the status of the indicator light on the ...Make sure it's not a screen issue. A common mistake is when the screen itself is black, people assume their laptop is off when it isn't. If you're using a second monitor with your laptop, disconnect it to see if the desktop appears on the main laptop window. If it doesn't, use the brightness function key on your keyboard to increase the brightness.Unplug your USB-C power adapter from the power outlet, then plug in a known good device, such as a lamp to confirm it powers on properly. If the power outlet works, connect your USB-C power adapter and try to charge your Mac. If your Mac still won't charge, shut down your Mac and close the display for 30 seconds, then open the …Apple may provide or recommend responses as a possible solution based on the information provided; every potential issue may involve several factors not detailed in …Press and hold the power button. As you continue to hold the power button, your Mac turns on and loads startup options. When you see Options, release the power …Find out what to do if the built-in camera won’t activate or appear in an app on your Mac. Update your software. Make sure your software is up to date. Check Screen Time settings. If your Mac is using macOS Catalina or later and you use Screen Time, make sure your camera is turned on and apps that use the camera have time available.Oct 7, 2020 · Boot laptop with command+R (still with a blank/dark screen) Wait 1 or 2 minuttes. Close lid/monitor and open it again right after. Now the screen shows the recovery boot menu and says something about forgot password. Cancel and choose start disk. Enter the encryption password and reboot. Laptop boots up normal. In general, the following might be the main causes of a MacBook not powering on: Power-related problems. Insufficient battery left on the device. User …Hold down the Shift + Control + Option keys. Power on the MacBook and keep holding the keys for about 30 seconds. The SMC will reset, and the Mac will boot as usual afterward. If your computer turns on by itself at certain times, such as midnight or 11 AM, a scheduled update or similar task is likely waking up the PC. Check power and cables: Make sure the power cord is plugged into the computer and into a functioning power outlet. If you’re using a MagSafe power adapter, the adapter light glows amber if the battery is being charged, and glows green when the battery is fully charged. Jan 20, 2016 ... This is a video that shows how to fix your Macbook if there's no power coming to your computer. It's a really easy and quick fix.Follow these steps. Press and hold the power button on your Mac for at least 10 seconds, then release. If your Mac is turned on, this forces it to turn off. If you see no change on your Mac, press and release the power button normally. If your Mac now turns on but doesn't finish starting up, follow the steps for when your Mac doesn't start up ...Step 2 — Enable the McAfee Firewall Click Allow if you see a message requesting permissions for the McAfee system extension to filter network content: . If the firewall isn't running, you must start it before continuing. Click the McAfee M icon in the menu bar.; Click McAfee (product name).For example, McAfee LiveSafe. Click Mac Security, or click the …Method 04. Check if Your Mac is in Airplane or Do Not Disturb Mode. Another reason why AirDrop not working on Mac is that people forget that they set it to Do Not Disturb or Airplane Modes. The latter deactivates wireless radios (e.g., Bluetooth and Wi-Fi). AirDrop relies on these wireless radios to do its job. Do Not Disturb within the Mac …If your Mac has no built-in display, make sure that your external display is connected to power, connected to your Mac, and turned on. Press and hold the power button on your Mac for about 10 seconds. (Every Mac has a power button. On laptop computers that have Touch ID, press and hold Touch ID.)Check power connections. Make sure that your power cable is undamaged and plugged securely into your Mac and a working electrical outlet. If your Mac has no …Common Reasons for MacBook Failure to Power On · Battery Depletion: If your MacBook's battery is completely drained, it may not power on until it has been ...Mac and cheese is a classic comfort food that is loved by people of all ages. Making it at home is easy and can be done with just a few ingredients. With a few simple steps, you ca...That's the way it's set up. If you want it not to turn on when pressing any key in keyboard, go to the big Apple logo at the top left of your screen, then system preferences, then Energy saver (looks like a light bulb), there you should be able to turn off "wake when any key on the keyboard is pressed", etc....you can also tell it how long to ...Press and hold the power button on your Mac for 10 seconds, then press it again. Reset the System Management Controller (SMC). Make sure that your display's brightness is turned up. Mac notebook computers have a Brightness Up key on the built-in keyboard. Unplug all accessories from your Mac, including printers, drives, USB hubs, …If your Mac doesn't start up all the way or needs you to do something during startup, it might stop at one of these screens. Question mark. Find out what to do if your Mac starts up to a question mark. Circle with a line through it. Find out what to do if your Mac starts up to a circle with a line through it (prohibitory symbol). Globe with ...Dec 20, 2022 · Continue to hold down both buttons until you see the Apple logo appear on the screen. This signifies the Apple Watch is restarting. The watch should restart within 10 seconds, but keep both buttons down for at least 30 seconds before giving up on the force restart. In some rare cases, the process can take up to 30 seconds. Press your Mac's power button. It will be located somewhere different depending on the device. For Mac Pro: On the top. Mac minis, iMacs, Mac Studios: On the back. Look for the Power symbol on the button. This article will walk you through how to turn on your Mac with the power button and what to do if that doesn't work.Feb 28, 2024 · Press and hold the power button. As you continue to hold the power button, your Mac turns on and loads startup options. When you see Options, release the power button. Click Options, then click the Continue button that appears below it. When you see the Utilities window, use Disk Utility to repair your startup disk, then restart your Mac. Jan 12, 2023 · Step-by-step Troubleshooting. Fix 1. Checking Power Connection to Fix MacBook Turning On Issue. Connect the MacBook Air/Pro charger to the computer and the electrical outlet. Make sure the.. Full steps. Fix 2. Perform a Power Cycle and Turn on MacBook. Holding down the MacBook's power key for 10 seconds is required. According to most Mac users' feedback, the real culprit is usually the bug of the feature of macOS Big Sur, called Optimised Battery Charging. You need to send your M1/M2/M3 Mac to the Apple Authorized Service store for a repair. M1/M2/M3 MacBook Air that's not turning on is an intractable issue due to the complex and unseen causes.Find out what to do if the built-in camera won’t activate or appear in an app on your Mac. Update your software. Make sure your software is up to date. Check Screen Time settings. If your Mac is using macOS Catalina or later and you use Screen Time, make sure your camera is turned on and apps that use the camera have time available.However, this does not seem to start using either Chrome or Safari on MacOS. Although not disclosed in the document mentioned previously or on the MVT page, I read in this community that MVT is not available for Mac. This leaves me with no known documented solution to my problem. If anyone in this community has solved this …With AutoBoot turned off, when the MacBook Pro lid is opened, it will no longer boot the computer or turn the computer on simply by opening the lid. Additionally, connecting the power cable will not automatically boot the Mac. Instead, the behavior is like it was on earlier Macs, which can open the lid of a Mac without turning the computer ...Dec 31, 2019 · Run Apple Diagnostics. Â To do this, press and hold the D key while you boot your Mac, and then see if any hardware issues are detected. Boot into Safe Mode. Â Press and hold the Shift key while your system starts to boot into Safe Mode. See if the problem persists. However, if all you see is a black screen when you power on your Mac, something’s not right. If you’re wondering why your MacBook screen is black when turning on, we’ll help you fix it.You need to turn this feature off on your iPhone, not your Mac or iPad. So grab your phone and go to Settings > Phone. Then, select Calls on Other Devices. You can now toggle which other devices you want to Allow Calls On, or just turn the feature off fully. I’ve gone the whole hog and turned off Allow Calls on Other Devices to stop my Mac ...Feb 28, 2024 · Press and hold the power button. As you continue to hold the power button, your Mac turns on and loads startup options. When you see Options, release the power button. Click Options, then click the Continue button that appears below it. When you see the Utilities window, use Disk Utility to repair your startup disk, then restart your Mac. May 27, 2022 ... When I had a Mac I used an app called Keyboard Cleaner that locked all keys except Cmd+Q combo. It doesn't solve the boot on lid open or any key ...However, if all you see is a black screen when you power on your Mac, something’s not right. If you’re wondering why your MacBook screen is black when turning on, we’ll help you fix it.Remove all peripherals and reconnect. If you notice your MacBook not detecting the external display when you power on the display after it's turned off, disconnect the data cable and reattach it. In the case of your MacBook not recognizing external monitors connected via USB-C, you can disconnect and reconnect the monitor's power … ---1