Install windows 7 with product key but no DVD

Question

Possible Duplicate:
How can I reinstall Windows 7 if I lost my installation DVD?

I installed Windows 7 from an original Ultimate DVD. I have the product-key but the CD has been lost. Is there any way to install it using my product key?

Answer 1

1. Open cmd as adminstrator and enter the commands below
2. slmgr.vbs -ipk {insert your new product key here}
3. To activate windows after changing the key, run “slmgr.vbs -ato”