Makumbang1, One thing right off, CMC mags are utter crap blank discs. We reccommend using Verbatim blanks, abit more expensive but a whole lot better quality. As previous posts mentioned we need a complete log file of the failed burn ( s ) to see whats going on. Open Imgburn, go to help, click on logs, open log for the failed burn, copy and paste into your post. This will give us more detailed info on what went wrong.