wake up Windows automatically using a scheduled task

This seems easy at first, but it turns out to be a lot harder than expected, due to various OS and power settings that get in the way. The idea is simple: you want to have your Windows 10 machine start up at a specific time using a task set in the task scheduler.

When you create a new task in the Task Scheduler, there’s a setting for this, so it looks so easy. It’s on the conditions tab. You activate the option to wake the computer to execute your task, and you’re done. Right? Well, if you’re really lucky that might work straight out of the box.
In case it doesn’t work, here are some things you can fiddle with to try and get it going.

  1. Create a wake-up tasks that doesn’t really do anything. Just run a command like this:
    cmd /c echo %date%
    For a more detailed guide on how to set up a task and the wake timers check this excellent article.
  2. Create a second task that does what you want it to do in a batch script but 10 minutes later than the first. That gives your computer ample time to start up, install any potential updates, or do whatever it sometimes does that takes so damn long.
  3. Deactivate Fast Startup. It messes with your hibernation mode and causes it not to startup again afterwards.
  4. Always hibernate your machine. If you just do a plain shutdown it doesn’t seem to automatically start up again. You can do this with the command below. This is also handy if you want to shut your machine down again, after your task has finished:
    shutdown /h
  5. Enable wake timers in your Power Options advanced settings. See the link below for instructions.
  6. For laptops make sure your Power Options are configured correctly. Mind closing the lid in that case. A closed lid will prevent the laptop from starting up in my case for example. Laptops will also not startup when they are running on the battery by default.
  7. Reboot your machine after fiddling with these settings if it still doesn’t work. This makes sure your settings stick.
  8. If you tried everything and it still doesn’t work, check your BIOS settings and see if there might be a power option in there that might prevent it from starting up automatically.

Give your machine a few minutes if you’re testing this. Yes, it’s annoying to wait, but if you set it too fast, it might not be powered down fast enough to be able to start up again, and miss the timer. That way you won’t be able to tell if it’s actually working.

Hopefully you can now use your desktop or laptop to run some nightly scheduled jobs, without having to have a dedicated always-on machine around. Saves you time and money on power consumption, hardware and maintenance!

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