Toshiba dvd-rom sd-m1102 broken?



Hey all, I borrowed my friends Toshiba SD-m1102 dvd-rom because he had problems getting it to read dvds, so well, I was trying to fix it. I throw it in my computer, and well, it would not read a dvd cd what so ever. It could read any other type of media but a dvd. So well, I messed around w/it, and now it can’t read any sort of media what so ever. Does anyone know how I could find instructions on how to fix cd-rom problems? Hardware problems? I don’t know if it is the lense or what. Any help would be greatly appreciated!