Windows won't hibernate, how to fix it?

User question

Hello.

Tell me how to solve one problem - my laptop does not go into sleep mode: i.e. the screen goes out, everything seems to turn off, but literally after a second or two it turns on again. What's interesting is that normal on / off works fine.

In principle, there is nothing criminal, but when you need to leave the laptop for 15-20 minutes, going away on business, you don't want to turn it off / on at all.

Good day!

In general, if we generalize and highlight the main variants of PC behavior (in which the problem of "sleep" arises), then the following problems are encountered:

the computer leaves and immediately wakes up from sleep mode (like the author of the question);
the computer wakes up at any time, often without a user;
the computer does not enter sleep mode at all (always on or off).

Such problems most often arise for several reasons. Today's note will be about how to fix them ✌.

And so, let's get started ...

👉 Supplement!

By the way, if you have the opposite problem: a computer or laptop wakes up from sleep mode on its own, then I recommend that you read this article

Why the computer does not go into sleep mode

1) Old, conflicting drivers

The first thing I recommend to pay attention to when such problems appear is the drivers. Especially, this point concerns the driver for the video card.

There are several options for how to update drivers. You can use programs to automatically search for and update drivers, you can go to the website of the manufacturer of your equipment, download the desired version and update manually. Below is a link to an article on how to do this.

👉 Instructions!

How to install drivers on a computer, laptop - step by step instructions

2) Out of date power settings

In half of all cases, incorrect settings are to blame for the fact that the laptop (computer) does not go into sleep mode (hibernation). power supply .

To check and change them, press the button combination Win + R and enter the commandpowercfg.cpl, press Enter (see example below).

powercfg.cpl - open power settings

Next, you should see the various power plans. We need to open sleep mode settings (or setting the current power plan), see the screenshot below. 👇

Setting the transition to sleep mode

Pay attention to the time it takes to enter sleep mode. Set the value to, for example, 15 min. (the main thing is that the parameters do not have the value "never").

How long does it take to put the PC into sleep mode

Also, be sure to open additional power options. The link for editing these parameters is at the bottom of the window (example below).

Change advanced power settings

There are two tabs to open here:

Sleep \ Allow wake-up timers: set both parameters from battery and mains to "Disable". Thus, we prevent devices from waking up the computer;
Multimedia settings \ When sharing multimedia: set in the parameters both from the battery and from the network "Allow the computer to go into sleep mode". Save your settings.

Allow PC to go to sleep

3) Devices that wake up the computer are not disabled

To begin with, I propose to determine the device that wakes your device from sleep mode (for example, a mouse). Then we just stop it from waking up the PC.

And so, first we press Win + R, enter the commandcompmgmt.msc, press Enter. Thus, we open the computer control (you can through the control panel, but this is faster in my opinion ✌).

compmgmt.msc - computer management

In PC management, open the following branch: Event Viewer / Windows Logs / System. Look for the event the source of which is Power-TroubleShooter. When you find the nearest one, open it.

Watching Windows logs

The event properties will indicate the source of the exit: in my case, this is the power button (since I woke up the laptop myself 👌).

Who woke the computer from sleep mode?

Most often, the reason for awakening lies in the mouse. In any case, knowing the device, you can prevent it from doing this. To do this, open the device manager (the combination of buttons WIN + R, then enter the commanddevmgmt.msc).

How to open the device manager

Then open the "Mice and other pointing devices" section, and then open the properties of the desired device (usually a HID-compatible mouse).

Mouse properties

There are specials in the properties. Power Management tab: just uncheck the box next to Allow this device to wake up the computer. Save the parameters.

Disable wake-up permission

Thus, you can prevent waking up the PC and other devices.

Note: in your case, it is possible that the computer is woken up by a device other than the mouse. But the principle of operation will be similar ...

4) BIOS not configured

Some BIOS versions have certain options that allow you to wake up the computer. For example, we can talk about Wake on LAN - an extremely useful option for system administrators, allowing them to wake up PCs over the network.

👉 Instructions!

How to enter BIOS (BIOS) on a computer / laptop

Usually, the Wake item is located in the Power section (also check the Advanced ). An example is shown in the screenshot below.

To exclude this function (and it sometimes does not work correctly), set the Enabled mode to Disabled (i.e. disabled).

Wake on LAN

5) It is possible that there is a process that does not allow hibernation

To find out which process is preventing hibernation, you need to open a command prompt (as administrator).

To do this, start the task manager (press simultaneously Ctrl + Shift + Esc), then press file \ new task and enter CMD (do not forget to check the "Create a task with administrator rights" checkbox, see the screen below).

👉 Help!

Instructions on how to open command prompt

Run Command Prompt as Administrator

Next enter the command powercfg / requests and press Enter. Ideally, if no processes are blocking sleep, opposite DISPLAY, SYSTEM, AWAYMODE, etc. should light up "no" (or "none" in the English version). See screenshot below:

on the left - everything is in order, the processes blocking the PC have not been identified;
on the right - one process was found that can prevent the laptop from going into sleep mode.