hi all i've tried for a long time kcam, then i have installed the mach2 demo, then mach1 demo and still cncplayer demo...but yesterday my cnc doesn't work anymore, wich each of these program my motors make noise only boring noise and so they didn't turn. i have so tried to change pc and all work fine so i sure that is a problem of lpt. I use xp sp2 and i can't understand how solve my problem, probably one of these program is in conflict, i don't know i would like to have a solution. Many thanks in advance