a. If it is unable to enter the PE environment, the computer black screen. Then please run it on another computer and try it out to rule out the problem of the PE environment. If the same is true on other computers, please re-burn the USB.
b. If you can enter PE, but after entering, it has always been a blue desktop but there is nothing, please wait a moment, it may be due to the hardware configuration of the computer, which will cause the software to start slowly.
First confirm whether it is a USB problem. You can first insert the USB into another computer to see if it can enter the PE system. If it is confirmed that the USB is OK, try to set the boot method in the Bios of this computer to UEFI.
a. Set Legacy support to enable.
b. After saving, restart and try the U disk startup shortcut key to see if the USB can be recognized.
a. It may be because of the BIOS problem that the settings cannot be remembered after the power is turned off and restarted, so that the hardware will be detected every time it is restarted, and it may be able to run normally only after several restarts. According to what is said in this article, then use the shortcut key selection method to manually select the U disk to start, instead of using the method of adjusting the startup items.
b. Security->Change configuration-None
The main purpose of this step is to open support for third-party PE startup. After configuring this step, restart and try to see if you can enter. If it still doesn't work, go to the next step.
c. Security->close "Secure Boot", "Boot Configuration", "Boot sequence" and "configuration lock"
The main purpose of this step is to close safe mode, because safe mode will prevent loading unauthenticated loaders and drivers.