The Product Key you entered is invalid.Key entered:
You cannot complete setup without a valid Product Key. To re-enter the Product Key, select "Re-enter valid Product Key" below and then click NEXT to return to the previous screen, and then retype the Product Key.
What to do if:
A Product Key was not included with your computer.
You think the Microsoft software or Product Key you received may not be legal.
In the U.S or Canada, call the Microsoft Piracy Hotline at 1-800-RU-LEGIT. In all other countries, contact your local Microsoft subsidiary.
To continue select one of the above, and then click NEXT.