What are the reasons and solutions for the black screen of U disk?

This phenomenon mainly occurs in two situations: when the computer is restarted after reinstalling the system; It is easy to leave the USB flash drive on the computer and then turn it on. The main reason is the setting of boot sequence.

Solution:

Pull out the USB flash drive safely from the computer, press Del, Esc or F2 to enter the BIOS interface, switch to "Advanced" option, move the cursor to "Start Speed", change "Normal" to "Fast", reconnect the USB external device, and you can log in to the system normally.

Press Del, Esc or F2 to enter the BIOS interface and switch to the "Boot" setting page. You will find that the first boot device is USB. At this time, just select the hard disk boot option, save and exit.