I bought an xbox not long ago which already had been softmodded. Now everytime i put a disc into the drive it tells me the drive is empty. at first it didnt read discs that were scratched even the slightest bit, but now it wont run anything. I can still play emulators on it perfect and anything else that isnt to do with the drive works fine. I was wondering what do I need to replace to get my xbox working again?