Why can t I wake up when Win8 automatically turns off the monitor?

Resolution. 1. Click Start, find Command Prompt in Attachments, right-click Command Prompt, and then click Run as Administrator. At the command prompt, type powercfg a to display native support for sleep, hibernation, and hybrid sleep.

2. Hibernation is closely related to the setting of the power supply, so the user must also press del to enter the BIOS at boot, and then set the "Power Management" to "Enabled" in the power options, and set the "ACPI Aware OS" to "Yes", and remember to save the settings.

3. Since the system will transfer the content saved in memory to the hard disk during hibernation, it is necessary to ensure that the hard disk has enough space, and the size of the space should not be lower than the capacity of the physical memory. It is recommended that the remaining space of the C disk should not be less than 4GB, otherwise it will not be able to sleep due to insufficient space or cannot be started after sleeping.

4. Open "Power Options" in the control panel; Click "Change Plan Settings" to change the power plan in use; Click on "Change Advanced Power Settings"; Sleep" option, change "Allow the use of wake timer" to "Disable".

I don't know why, I know that when I turn off the monitor and turn it on again, it will be displayed.

Workaround: Wake up method:

1. Try to press the screen adjustment shortcut key on the keyboard, and you will find that the screen brightness can still be adjusted, which means that the computer has been woken up, but the screen is not bright, <>

2. Try to press other keys again, and find that there is no effect, 3. Then try to press win+l.

Settings: 1. The desktop location of the win7 computer, then find the computer icon of the desktop and right-click, in the slide menu, select the Device Manager option.

2. Open the device manager window of the win7 computer, let's directly click to select the network adapter in the left menu, and then find the driver of the local network card in it, let's right-click on the item, and then select properties.

3. Next, a property window will pop up, directly switch the interface to the power management column, and then uncheck the box in front of the [Allow this device to wake up the computer] option, and finally click OK to save the settings.

Hello, if the computer can't wake up after hibernation, it's because the wake-up conditions are not met, and the main reasons are as follows:

1.If the interrupt used by the keyboard or mouse is not set to wake up, the solution is to go to the "Power Management Setup" setting screen of the BIOS and turn on the IRQ wake-up function of the relevant devices under the "PM Events" option, i.e. set IRQ3, IRQ4, IRQ5, IRQ6, IRQ12, IRQ14 and IRQ15 to "Enabled".

2.If there is a conflict between the device drivers, it is recommended to uninstall the old drivers; The driver is not compatible with the installed hardware, please replace or upgrade the driver.

4.There is a problem with the operating system, and perhaps installing a patch will fix the problem.

5.If you can't wake up after a little longer after hibernation, it is likely that the CPU fan is stopped and the CPU has not entered the corresponding sleep mode as required, causing the CPU temperature to be too high, resulting in the computer not working properly. This phenomenon mostly occurs in computer systems that monitor CPU temperature and CPU fans.

You may enter sleep mode, enter the power option to check whether it is turned on for 30 minutes and then enter sleep mode; Instead of entering sleep mode, you can open [Device Manager], find [Keyboard] and [Mouse and Other Pointer Devices], double-click the specific device below, click [Power Management], and then check [Allow this device to wake up the computer], and finally confirm to save.

It should be that the computer screen is broken, and nothing else can happen.

If the computer is not used for a long time, it needs to be woken up by the keyboard and mouse, and if it is used for a longer time, it is necessary to press the power to wake up the system.

There is no sleep in the power options, only the machine is turned off, and the sleep is restarted

1. Win+R input the command, then enter the Group Policy interface, and select "Computer Configuration", "Management Template", and "Windows Component" in order.

2. Then look for "Windows Explorer" again, there is a policy in this branch marked in English, which means to show hibernation in the power options: "show hibermate in the power options menu", according to the usual operation, modify it to "enabled".

Force refresh the previous Group Policy settings, win+x and select "Command Prompt (Administrator)".

Enter "gpupdate force".

3. Open the power management interface again, and then find that the sleep option appears.

4. Continue to use win+x, select "Command Prompt (Administrator)", and enter "PowerCFG DeviceQuery Wake Armed". See that there is one device that supports waking the computer from hibernation, the mouse. Modify it to not let it wake up the computer.

First, make sure that the hardware driver is updated to the latest version. We can use Windows Update.

Press Win + X, select Control Panel -Windows Update";

Press "Check for Updates" on the left to start the check.

Second, check if the hardware supports it.

Press Win + X, select "Control Panel" - Command Prompt";

In the window that opens, type: powercfg -a and press enter.

If your hardware doesn't support sleep, you may need to contact your computer manufacturer to upgrade your BIOS.

Finally, check which devices are able to wake up your computer.

Press Win + X, select "Control Panel" - Command Prompt";

In the window that opens, type: powercfg -devicequery wake armed, and press enter.

You will see the devices that you can use to wake up your computer, the mouse in general, the keyboard. If the mouse device is not listed, it means that the machine cannot be woken up with the mouse, and the function can be turned on by following the following steps:

Press Win + X, select "Control Panel" - Device Manager";

In the directory list, find the item that corresponds to the mouse you are using, right-click and select "Properties".

Open the Power Management tab, tick Allow this device to wake up the computer, and then press OK.