To those who change the lazer and it still doesnt work. Try putting the disc in the drive and taking it out again straight away. Repeat up to 20 times. I spent a whole afternoon trying to get a new lazer to work and thats what did it. Apparently they need to have a bit of power run through them first. Shout out to the people having this problem in 2016 took me 3 days of google searches and still found the answer on my owb pretty much.