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How to Fix Mac Won't Wake from Sleep Issue after mac OS 11 Update

Audrey Goodwin

2024-04-18 11:56:27 • Filed to: macOS Tips and Tricks • Proven solutions

When using your Mac, other urgent matters may arise that need your immediate attention. To avoid closing certain programs, you will have to put your macOS 11 on hibernation or sleep mode, so that you can continue from where you left off when you return. When you return and wake your Mac, the system may refuse to respond to key presses and hence won’t wake from sleep. In such a situation, you will wonder what you should do if your Mac won’t turn on. This article will show you how to fix a Mac that won’t up on macOS 11.

How to Fix Your Mac Not Waking from Sleep on macOS 11

The first step in learning how to fix your Mac not waking from sleep on macOS 11 is understanding the problem. macOS 11 refusing to wake up from sleep mode could be due to power management problems or hardware-based configuration fault. The System Management Controller may cause unusual system behaviour like high speed fans, despite Mac not having heavy usage. Computer may also fail to respond to the power button when pressed, or may shut down or sleep unexpectedly.

Luckily, there are various solutions that you can try to fix a Mac that won’t up on macOS 11. They include;

1. Resetting System Management Controller (SMC)

Resetting SMC varies depending on your Mac.

If it is a portable Mac with a removable battery;

Shut down Mac
Disconnect the connected MagSafe power adapter from computer
Remove battery
Press and hold Power button for five seconds
Release Power button
Reconnect battery and MagSafe power adapter
Turn on Mac using the Power function.

If it is a portable Mac without a removable battery;

Shut down Mac
Plug in MagSafe power adapter to a power source and connect it to Mac if disconnected
On built-in keyboard, press Shift-Control-Option keys on the left and power utility together
Release all functions at the same time
Press Power function to turn on computer

If it is a desktop Mac only;

Shut it down
Unplug its power cord
Wait for fifteen seconds
Attach the power cord
Wait for five seconds then turn on Mac using the Power function.
Using the power button of keyboard

When your macOS 11 Mac fails to respond to mouse clicks or taps on the track pad, try pressing the Power button or any key on the keyboard. If nothing happens, try the next solution.

fix a mac that won’t up on macos 11

2. Doing a Hard Shut Down

A hard shut down is recommended when your Mac is completely unresponsive. So, it should not be an often solution because it could damage or corrupt your files. To do a hard shut down, press and hold the Power button until your Mac shuts down. After a few seconds of shutting down boot it up regularly.

fix your mac not waking from sleep on macos 11

3. Resetting NVRAM and PRAM

NVRAM and PRAM, which are non-volatile random access memory and parameter random access memory respectively, may get corrupt and thus cause multiple issues. Whenever you turn off your Mac, these two memory areas store information and settings that is not cleared. Resetting them helps in correcting the corruption to end the issues caused.

Shut down Mac
Hold down Command, Option, P, and R keys on the keyboard simultaneously
Turn on Mac
Before the gray screen appears, press and hold Command-Option-P-R keys together
Hold them down until Mac restarts and there is the second startup sound.
Then release the keys.

how to fix macbook won’t turn on on macos 11

If all these solutions do not fix your Mac not waking from sleep on macOS 11, call AppleCare or take the computer to an Apple Store.

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