Hi, I bought my Windows 7 64 Ultimate ages ago, I have had to format my PC; so I am reinstalling Windows using the same disc. There are a few issues that come up. Firstly it takes forever to load, and it takes 18+ hours to get to 98%. Once it gets there it stops and says there is a file missing or something and I get an Error Code 0x80070570. Now this has happened 3 times of the last 2 days, each time taking 18+hours, the third time however it got to 48% before it gave me the same error. I remember this happening when I first installed as well, but on the second time it miraculously worked. I think it is a problem with my DVD Rom, to be honest I rarely use it, but when I have had to it was very slow. I plugged it in my self. These are the things I have tried. Re-installing/Re-installing without a boot (As suggested by another forum) Re-plugging in DVD Rom Please help!