What should I do when Windows 8.1 is automatically shut down when I am idle?

My friend's Windows 8.1 system has a small problem, and his computer shuts down when it is idle. This situation may be related to the improper setting of the power supply option, but it is still necessary to analyze the cause of the problem. Let's take a look.
After his computer, everything was normal. After pressing the power button a few days ago, due to temporary problems, I didn’t wait for the password to enter the Microsoft account interface. After about 40 minutes, the display frequency is black, but The light at the power button is bright. He pressed a lot of mouse, and the display did not respond to any black screen. However, he could only press the power button again, and then restarted (longer time).
This time, after booting up, a hidden file desktop appeared on the desktop. After deleting it, it was found that after 5 minutes of idleness, the display screen was black. After a black screen, press a few mouse clicks to enter the password to re-enter the Microsoft account. After about 10 to 20 minutes, the light at the power button will not light up, and it will automatically shut down. After rebooting, the previously deleted desktop file appeared again, and the computer will automatically shut down after about 20 minutes of idle time. If the computer is always operating, there is no problem, just after the computer is idle, it will automatically shut down after about 20 minutes.
Solutions
First check to make sure the hardware drivers have been upgraded to the latest, and if not, update the drivers or reinstall the power management drivers and motherboard drivers.
1. Check if the mouse and keyboard device can wake up the computer:
Press “Windows Logo Key>+“X”+“P”Open the control panel and view it with a large icon type. Open “Device Manager”.
Find the item corresponding to your mouse or keyboard, right click and select “Properties>;&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&& Turn off Quick Launch:
On the system desktop, left click on the system in the lower right corner and bring the "Battery" icon to select More "Power Options”.
The pop-up "Power Options" interface, click <; Select the power button function & rdquo;.
In the pop-up interface, some options cannot be changed. Click "“Change the currently unavailable settings".
The options that were previously unselectable can be changed. You can see the "Enable Quick Launch (Recommended)" option (the system is enabled by default), where you can set whether to enable or disable this feature.
3. Turn off Hybrid Sleep
Press "Windows Logo Key>+”X“+”P“Open Control Panel--Power Options--Select Power Plan--Balance/Energy/High Performance- - Change plan settings -- Change advanced power settings -- Sleep -- Allow mixed sleep -- Change to “Close”. Save and exit.
By the case, Xiao Bian feels that the stability of the current Windows 8.1 system is not enough, of course, the probability of an accident is not very large. If you have problems related to abnormal shutdown, you can first check if the power options are set correctly.