1,. There is no advanced power management support for turning on the computer.
If this is the case, you should click Start → Settings → Control Panel → Power Options → High Energy Power Management, and then select Enable Advanced Power Management Support.
2. There is an error in the advanced power management settings in the 2.BIOS.
It is also possible that the advanced power management option in BIOS has been modified by mistake (advanced power management in BIOS). If you know a little about BIOS settings, please enter the BIOS. If you don't know how to enter it, hold down the delete key of the computer when you start it. If you are a notebook or a brand-name machine, you can't escape F8, F9, F 10, F65538. Try it in order. Select the advanced power management option after entering. Try to modify the power management options in the BIOS. If the first item is enable, you should change it to disable. But if you are not familiar with the BIOS at all, just enter the BIOS as I said, and simply select the "Load Default Settings" option, that is, restore the default settings when the BIOS leaves the factory.
3.APM/NT old node is not open.
Under normal circumstances, the APM/NT Legacy node is not turned on, which may lead to shutdown, but the power supply cannot be automatically cut off. Enter Device Manager and click View → Show Hidden Devices in the menu bar to display all hidden devices in the system. Check the device list box of APM/NT legacy node options. You will have this option if your computer supports this feature. In the pop-up properties dialog box, double-click and click the Enable Device button.
4, close the group policy
Generally, this option is rarely thought of, but it is also the most impossible reason. Still, it's worth a try. Click Start → Run → then enter gpedit.msc to open an interface, and then select Computer Management → Management Template → System on the left. If this option is not configured or enabled, it will be disabled.
6. Hardware problems
You can try changing the power supply. If this problem still occurs after changing the power supply, it is the problem of your motherboard. This power management module is broken. Change the board. Or get the place to repair the board, that is, tens of dollars, which is relatively more cost-effective than changing the board.