I have a DuoSE modchip and i have burned a game that will not boot. I know it is not the DVD beacause it has worked on my machine before, but recently it has given me so much trouble. I have already cleaned my laser and still nothing. I have to try like 50 times in row in order to get it to boot. I have a version 4 ps2 and am using ritek "sliver shiney" media 4x. Can anyone tell me what to do?