Hello
You need to provide some context.
Is this new install, first time using license, or are you transfering license from one device to another, or reinstall on the same motherboard?
And,
How did you obtain your license initially?
Did it come with the device preinstalled, or did you purchase it?
If you purchased it, did you purchase from Microsoft, or from third party?
Is it originally a Win7/8 key?