The Product Key in use here is a Volume MAK License Key.
It has not been activated, and is now out of 'grace period'
Validation will always fail on systems out of grace period.
If you bought this license retail, it is a counterfeit - Volume License Keys are only sold to organidations for use in their own machines.
If you are a member of such an organisation, then attempt activation, but first check your Region, time and date settings (they are out)
Then click on Start, and in the Search box, type