You open your MacBook lid, tap the trackpad, and nothing happens. The screen stays black, the keyboard backlight stays off, and your Mac appears completely frozen in sleep mode. Learning how to fix a Mac that won’t wake from sleep is simpler than it looks, and most people can resolve the issue in minutes without a trip to an Apple Store.
In this guide, I will walk you through the fixes that actually work, starting with the quickest and moving to deeper resets. I have organized each method for both Intel and Apple Silicon Macs, because the reset procedures changed when Apple introduced its own processors.
How to Fix a Mac That Won’t Wake From Sleep
The fastest way to bring a sleeping Mac back to life is to force restart it. Press and hold the power button for about 10 seconds until the screen goes fully dark, then press the power button again to turn it back on.
If the screen was black because the Mac was stuck mid-wake, this usually clears the problem. On a MacBook, you can also try closing the lid for 10 seconds, then opening it again, which sometimes forces the display to reinitialize.
When a simple restart does not work, move through the sections below in order. Each step targets a different cause, from power delivery to firmware settings.
Quick Fixes to Try First
Before you reset anything, run through these basic checks. They take less than a minute and solve a surprising number of cases.
Check the Power Connection
A MacBook that has been asleep for hours may have drained its battery below the threshold needed to wake. Plug in the charger and wait 60 seconds before pressing the power button.
If your Mac uses USB-C, try a different port. MagSafe users should check that the LED lights up. A loose or damaged cable is often the real culprit behind a Mac that looks like it will not wake.
Press Keys and Trackpad With Purpose
Tap the trackpad firmly, press the spacebar, or click a mouse button. Avoid repeatedly pressing the power button, because on newer Macs that can trigger shutdown instead of wake.
If the Caps Lock key lights up but the screen remains black, the Mac is awake and the display is the issue. In that case, skip ahead to the external devices and display sections.
Force Restart Your Mac
Press and hold the power button for 10 seconds. On a MacBook, the fan and any running sounds will stop. On a desktop Mac, the chassis light will go off.
Release the button, wait five seconds, then press it once to power back on. This is not a graceful shutdown, so any unsaved work may be lost, but it is the single most reliable way to recover a sleeping Mac.
Disconnect External Devices
External peripherals can prevent your Mac from waking properly. Docking stations, USB hubs, external drives, and even certain wireless receivers can keep the system in a confused low-power state.
Unplug everything except the power cable. Then press the power button. If the Mac wakes normally, reconnect one device at a time until you find the one causing the problem.
External Monitors Can Hide the Real Issue
Many users think their MacBook will not wake when the laptop screen is actually fine but the external monitor never turns back on. This is especially common with DisplayPort and USB-C hubs.
Disconnect the monitor, wake the Mac, then reconnect the cable. If the monitor still does not show a picture, turn the monitor off and on again, or switch to a different input and back. Some monitors fail to handshake with a Mac after sleep.
Reset the SMC (System Management Controller)
The SMC manages sleep, wake, power, and thermal behavior. A corrupted SMC can make a Mac refuse to wake, run warm during sleep, or wake immediately after you close the lid.
Apple Silicon Macs (M1, M2, M3, M4 and later)
Apple Silicon Macs do not have a user-resettable SMC. The equivalent functions are handled by the processor and reset automatically when you shut down and wait 30 seconds before restarting.
To perform the equivalent of an SMC reset on an Apple Silicon Mac, shut it down completely, unplug the power cable or charger for 30 seconds, then plug it back in and power on.
Intel Macs With a T2 Chip
These include most MacBook Pro and MacBook Air models released from 2018 to 2020, plus the 2018 Mac mini and 2020 iMac.
Shut down your Mac. Press and hold the power button for 10 seconds, then release it. Wait a few seconds, then press the power button again to turn on the Mac.
If the problem continues, shut down again, then press and hold the right Shift key, the left Option key, and the left Control key for seven seconds. Keep holding those keys and press and hold the power button for another seven seconds. Release all keys, wait a few seconds, then press the power button to turn the Mac on.
Intel Macs Without a T2 Chip
For MacBooks with removable batteries, shut down, remove the battery, press and hold the power button for five seconds, reinsert the battery, then turn the Mac on.
For MacBooks with non-removable batteries, shut down, then press Shift-Control-Option on the left side of the keyboard and the power button at the same time. Hold for 10 seconds, release, then press the power button again.
For desktop Macs like the iMac, Mac mini, or Mac Pro, shut down, unplug the power cord, wait 15 seconds, plug the cord back in, wait five seconds, then turn the Mac on.
Reset NVRAM or PRAM
NVRAM, which older Macs called PRAM, stores small settings like startup disk selection, speaker volume, and display resolution. Corruption here can occasionally interfere with wake behavior.
How to Reset NVRAM on an Intel Mac
Shut down your Mac. Turn it on and immediately press and hold Option-Command-P-R for about 20 seconds. On Macs that play a startup sound, you can release the keys after the second startup chime.
On Macs with a T2 chip, release the keys after the Apple logo appears and disappears twice. After the Mac restarts, you may need to reselect your startup disk and adjust sound settings.
Apple Silicon Macs Reset NVRAM Automatically
On Apple Silicon Macs, there is no manual NVRAM reset procedure. The system detects and repairs NVRAM issues during startup. If you suspect a firmware-level problem, simply shut down fully, wait 30 seconds, and restart.
Boot Into Safe Mode
Safe mode starts your Mac with only essential system software and performs basic checks on the startup disk. If your Mac wakes normally in safe mode, a third-party app or login item is likely causing the sleep issue.
Safe Mode on an Intel Mac
Shut down your Mac. Turn it on and immediately press and hold the Shift key. Release the Shift key when you see the login window. Log in, then test sleep and wake.
Safe Mode on an Apple Silicon Mac
Shut down your Mac. Press and hold the power button until the startup options window appears. Select your startup disk, then press and hold Shift while clicking Continue in Safe Mode. Release the Shift key and log in.
If safe mode fixes the problem, restart normally and remove recently installed apps, browser extensions, and startup items one by one until the culprit is gone.
Check Energy Saver and Display Settings
Sometimes the Mac is actually awake, but the display settings make it look unresponsive. In other cases, power management settings prevent proper sleep.
Adjust Sleep and Wake Settings
Open System Settings, then go to Lock Screen or Battery. Make sure the display sleep timer is not set to Never unless you specifically need it. A display that never sleeps can sometimes refuse to wake from its own dimmed state.
Turn off the setting called Wake for network access if you do not need your Mac to respond to network requests while asleep. This feature is known to cause intermittent wake failures on both Intel and Apple Silicon Macs.
Look for Apps That Prevent Sleep
Open a Terminal window and type the command pmset -g assertions. Look for entries that say PreventUserIdleSystemSleep or PreventUserIdleDisplaySleep. If a specific app is listed there, quit it and test sleep again.
Some media players, backup tools, and video conferencing apps keep the system awake. Quitting them before closing the lid can prevent the next black-screen episode.
Desktop Mac Specific Fixes (Mac mini and iMac)
Desktop Macs have their own quirks. A Mac mini that will not wake from sleep is usually connected to an external display through a hub or adapter that fails to resume.
Mac mini Won’t Wake From Sleep
Disconnect the HDMI or Thunderbolt cable, wait 10 seconds, then reconnect it. If you use a USB-C to DisplayPort adapter, try a different adapter or cable. Some adapters do not recover cleanly from sleep.
Press any key on a wired keyboard rather than a Bluetooth one. Bluetooth can take longer to reconnect after sleep, and the initial wake signal may not register.
iMac Won’t Wake Up
On an iMac, the power cable can loosen slightly over time. Unplug it, wait 15 seconds, then plug it back in firmly. Press the power button once and wait for the screen to appear.
If the iMac still does not wake, try shining a flashlight at an angle against the screen. If you see a faint image, the backlight has failed and you need display service, not a software fix.
Preventing Future Sleep Wake Problems
A few habits can reduce how often your Mac gets stuck in sleep mode. They take almost no effort and can save you from repeated force restarts.
Keep macOS updated through System Settings under General and Software Update. Apple releases sleep and power management fixes regularly, especially after new hardware launches.
Restart your Mac at least once a week. macOS handles memory well, but long uptimes can accumulate small firmware and kernel states that affect sleep.
Remove apps you no longer use, especially utilities that claim to optimize battery or memory. Many of them install background helpers that conflict with normal sleep behavior.
Frequently Asked Questions
Why is my MacBook not waking up from sleep?
Your MacBook may not wake because the battery is drained, an external device is interfering, the SMC settings are stuck, or a macOS process is preventing wake. Start with a force restart and disconnect peripherals.
How to fix sleep wake failure on Mac?
Fix sleep wake failure by checking power, force restarting, disconnecting devices, resetting the SMC on Intel Macs, and resetting NVRAM if needed. Apple Silicon Macs recover from these states with a full shutdown and restart.
How do I force my Mac to wake up?
Press and hold the power button for 10 seconds to force a shutdown, then press the power button again to restart. On a MacBook, closing the lid for 10 seconds before reopening it can also trigger a wake.
How do I get my Mac out of sleep mode?
Press any key, click the trackpad, or click a mouse button. If that fails, plug in the charger, then force restart by holding the power button until the Mac shuts down and turns back on.
When to Contact Apple Support
If your Mac still will not wake after trying every fix in this guide, the problem may be hardware. A failed display backlight, faulty power button, or swollen battery can all mimic a sleep issue.
Contact Apple Support if you see a faint image on the screen under a flashlight, if the Mac gets unusually warm while supposedly asleep, or if it fails to wake multiple times per week. Persistent sleep wake failures sometimes point to a logic board or battery problem that needs professional diagnosis.
Conclusion
Knowing how to fix a Mac that won’t wake from sleep starts with the basics: check power, force restart, and remove external devices. For deeper issues, Intel Mac owners can reset the SMC and NVRAM, while Apple Silicon users can resolve the same problems with a full shutdown and restart.
Most wake failures are temporary and can be fixed in under five minutes. Work through the steps in order, keep your software updated, and restart your Mac regularly. If the problem keeps coming back, Apple Support can check for hardware faults that software cannot repair.