Black box means no PWM. Can you try sending an M106 S3 from your host software and see what you get? Laser should turn on but will be too weak to burn the wood. Then try M106 S255 and see if the wood starts burning. I just want to confirm that your PWM and laser driver are working. If they are then go ahead and post your latest file with power=255 and speed =1300 and I’ll try to burn it tomorrow. If it works for me and your hardware is good then we need to look at your host software again.