First of all, I would like to thank you people for having such informative site. Such as, the FAT and NTFS filing system. Background: i am using Nero 7 and burn with 4x and 2x. Using different brands of DVD-R. I am not sure what mod chip i am using cause it was included when i bought it. But i am sure it plays Wii and GC backup games. I bought those burn games from China and it works fine. Problem 1: I tried burning Wii and GC backup games but none seems to work. I've tried burning Mario Kart and Mario Sunshine. Mario Kart works fine but when i click to play Mario Sunshine, i can only hear the sound of it and there's no pictures. Any idea? I tried different burning speed with Nero and different brands of DVD-R. Problem 2: I burned Wii sports and put it in Wii. It loads and says Wii sports but when i click play then the screen blacks out. There aren't even sounds this time.