✔ 最佳答案
Before confirm your DVD rom damage or not, if your computer under warranty, is free, if not, you go to anywhere, either for checking, may ask for $100. but one brand new DVD-writer, is only $300. I think when you go to the shop, you can ask them, if the DVD rom damage after they check for you, can they free of charge help you to install the new DVD writer and buy the DVD writer from their shop?
Even is simple work, before you do that, please backup your important data first, you never know being the unplug the power and install the new hardware may be have problem or data loss being you move your computer case to there.