Drivers not found on Dell site

Hello,

I have an Alienware Aurora R1 Desktop and had to reformat my pc the other day. I went to dell.com site to download the drivers and the when clicking the link on a specific driver it simply doesn't work and it says file not found. The resource dvd that came with my desktop does not include all of the drivers. I am missing the Serial ATA drivers and was wondering if there was another way to download these drivers. Why are the links on Dell's site not working? Are they fixing this problem on their site?? Appreciate any help on this matter. Thanks!