why isnt my product key working. my computer was a windows 7 and now i upgraded it to a windows 8.1....im trying to reinstall

[tysontyron21]

why isnt my product key working. my computer was a windows 7 and now i upgraded it to a windows 8.1....im trying to reinstall

 

[tysontyron21]

im trying to install windows 8.1 again but its asking me for the product key, wat do i do

 

[USAFRet]

im trying to install windows 8.1 again but its asking me for the product key, wat do i do

Do you in fact have the license key written down?
Is it a valid license key?
What exact error message does it give you?

 

[Wolfshadw]

...and you are trying to use the new Windows 8.1 product key, yes?

-Wolf sends

 

[KaelenTV]

If you bought the key online from microsoft check your email there should be a key located in one of the emails they sent you