So ive had my flashed xbox for about 3 weeks and ever sense its been flashed it wont read the disc's on the first try, but when i do get them to work i try installing them to my HD. After about 19 or 20 something percent it says the disc needs to be cleaned or unreadable dics. I was lucky awful to get two discs installed (Black Ops 2 and Halo 4). Its been two weeks sense i last installed any games but when i tried to install X-COM today like i said it only gets to 19 to 20 percent then says clean discs and some times stops on 7 percent too. I personally don't think its the lazer because right before the mod it read discs right away, so maybe the mod was bad or some.