I have had a windows7 cd with key, I intalled and activated the OS ,Afterwards M

[res86]

I have had a windows7 cd with key, I installed and activated the OS ,Afterwards My OS and cd both got corrupt ,NOW I have only a genuine key Where can I download the OS?

Thanks

 

[number13]

How did you corrupt a DVD?
anyway MSFT has the download:
http://platform-solutions.techweb.com/?kw=sem_ms_BI_goog_Home_Win7_adver2_win%207%20download