i have 50w raycus fiber lazer i had old pc everything was working fine with lightburn but yesterday i got new pc from the lazer dealer and now everytime i turn on negative image anything above speed 400 not working which is very weird, i had lot of experience with engraving so im trying to use same settings same material even same photos and when i do when negative image is on nothing works unless i put the speed belove 400 then it does somethings i can see laser doing engraving but above 400 its not even visible i asked the guy who gave me the laser he says he doesnt know anything about lightburn. ezcad2 is working fine i tried past realeses still same problem i deleted fully lightburn removed the files from appdata aswell but i still cant find the problem, i also manual set up the lightburn. does anyone knows how to fix this
Welcome Cevik,
Try a clone of the settings that work on the old PC: