Solution:Install the drive.
"1. The driver cannot be installed: To connect to the device and then install, the required driver installation package is in the U disk packaged with the device;
2. The board has only one green light on: only the green light is on when it is in standby, and the red light is on when it is working. Green light Power, red light Laser;
3. If changing the computer still does not work, it is recommended to replace the board. "