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1 Posts

09-13-2020

US

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Legion Y740 randomly turns on from sleep mode

2020-09-13, 4:32 AM

This is a huge problem because it sometimes happens while in my bag and it gets extremely hot, too hot to touch. 
 

It seems to happen mostly after my commute from work, but occasionally I’ve woken up to seeing the lights on while being shut and the fans running

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723 Posts

03-11-2020

NO

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Re:Legion Y740 randomly turns on from sleep mode

2020-09-15, 9:22 AM

Hi,

 

Welcome to the Lenovo forum community!

 

How to Find Out What’s Causing Your Computer to Wake Up

To find out what is causing your computer to wake up, open Command Prompt as an administrator and type in powercfg/lastwake. Then type powercfg/waketimers to find out if you have any wake timers on.

  1. Click the magnifying glass icon in the bottom-left corner of your screen.
  2. Then type Command Prompt into the search bar.
  3. Next, click Open as administrator. You will get a pop-up message asking if you want to run the program as an administrator. Click Yes
windows search command prompt
  1. Then type in powercfg/lastwake and hit Enter on your keyboard. This will show you whether it is your devices, programs, or other actions that caused your Windows 10 computer to wake up. If you see something like USB, that means it is probably one of your USB devices, like your mouse of your keyboard.
  2. Then type powercfg/waketimers to see if you have any wake timers set on your computer. This will show you if there are any processes or tasks that are scheduled and are causing your Windows 10 computer to wake up.
commnad prompt wake timers Why Does My Computer Keep Waking From Sleep Mode

How to Stop Devices From Waking Your Computer Up From Sleep Mode

To stop a device from waking your Windows 10 computer up from sleep mode, open the Device Manager and double-click a device. Then click the Power Management tab and untick the box next to Allow this device to wake up the computer.

  1. First, type powercfg -devicequery wake_armed into the Command Prompt. This will tell you which devices are causing your Windows 10 computer to wake up. 
command prompt find out which device Why Does My Computer Keep Waking From Sleep Mode

In the example above, the keyboard and mouse are the only devices that are waking up the computer from sleep mode.

  1. Then press the Windows key + R on your keyboard. This will cause the Run box to pop up. 
DEVICE MENAGER RUN BOX
  1. Next, type devmgmt.msc into the search bar and click OK.  
  2. Select the device that’s causing your computer to wake up and double-click it. This will open up the device’s properties.
  3. Then click the Power Management
  4. Finally, untick Allow this device to wake up the computer and click OK.
don't allow device to wake up computer from sleep mode

How to Stop Programs From Keeping Your Computer Up

To stop a program from waking up your Windows 10 computer, open the Command Prompt and type powercfg -requests. This will show you the program that is keeping your computer from sleeping. Then close the program.

power config requests Why Does My Computer Keep Waking From Sleep Mode

In the example above, Google Chrome stopped the computer from going to sleep because it was playing an audio file.



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2 Posts

09-16-2020

PK

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Re:Legion Y740 randomly turns on from sleep mode

2020-09-16, 12:24 PM

My Legion Y740 turn on from sleep mode  also and Suddenly I have my website open infront of me.

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