(Program intent: As long as the person with the U disk can use the computer, if the U disk is pulled out, the computer will enter a black screen operation. Instructions for use: Put the file in the root directory of the U disk, and if the U disk is pulled out, the system will enter a black screen. In the locked state, if the U disk is inserted, it will resume work. To exit the program, please select exit in the system tray on the lower right foot, the exit password is microme, haha ??scriptpaused is suspended, that is, it can work from the U disk.)