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Summary :

what woke up my computer

Wake up your computer from sleep mode is easy and quick. But sometimes, you just find that your computer keeps waking up from sleep for no reason. You may want to know: what woke up my computer? No matter you are using a Windows computer or a Mac computer, you can read this MiniTool post to learn how to find out what woke up your computer.

If you don’t want to shut down your computer at night or for some other reason, you can put your device into sleep mode. When you want to wake up your computer, you can just move your mouse or press a key on the keyboard.

But at times, you may find that your computer just wakes up from sleep for no reason. This will be an annoying issue if you are using a desktop computer with a big-size monitor, which can be closed like a laptop.

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What woke up my computer? You may ask this question. In this post, we will show you the things you can do to find out what woke up your computer on Windows and Mac.

How to See What Woke up Your Computer on Windows?

Use Command Prompt

If your computer keeps waking up from sleep for no reason, you can follow these steps to find the culprit.

  1. Search for cmd using Windows Search and then select Run as administrator for the search result to run Command Prompt as Administrator.
  2. Type powercfg –lastwake and press Enter (you can also type powercfg –waketimers).

This tool will show you what woke up your computer last.

Use Event Viewer

If you want to get more information, you can perform a deep search by using Windows Event Viewer.

  1. Use Windows Search to search for event viewer and click the search result to open it.
  2. In Event Viewer, you need to go to Windows Logs > System.
  3. Scroll down to find the Power - Troubleshooter option and click it to open it.
  4. In the General tab, you can see what woke up your computer in the Wake Source You can also find some other information like Sleep Time and Wake Time.

How to See What Woke up Your Computer on Mac?

If you are using a Mac computer and want to know what woke up your Mac computer, you can use the Terminal utility. Here is a guide:

  1. Click the Launchpad icon in the Dock and type Terminal in the search field. Then, click Terminal to open it. You can also click Finder, open the /Applications/Utilities folder, and then double-click Terminal to open it.
  2. Run the following content: log show --style syslog | fgrep “Wake reason".
  3. It will take a while to execute the command. Then, you can see the wake reason for the last wake up of your Mac. If you see nothing, you can open the Console and then search for Wake reason.

If Your Computer Doesn’t Waking up from Sleep

If your computer doesn’t wake up from sleep, you need to take measures to fix it like allowing the keyboard and mouse to wake up your computer, turnning off Start Up, re-enabling hibernation, and modifying the Power Settings. This post shows you what to do: 4 Solutions to Computer Won’t Wake up from Sleep Windows 10.

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