Windows Activation Key keeping

[gamerace2013]

Hello,

I've recently bought a laptop with windows 10 home preinstalled in it(activated) and i wanted to install windows 7, just to try it for three-four months(i've bought them too).

But if i install windows 7 and then go back to windows10 will i be asked to enter to enter new activ. key or i will have the preinstalled one?

Also is the key on win10 related with microsoft account?

 

[The Paladin]

if you have a windows 10 email account activated with your windows 10 O?S no you will not when you reinstall you will skip the serial number and then will be asked to log into email account, once you do that you will have to activate by email confirmation, the system remembers your serial number

 

[timmy_area51]

yes it is

for instance i changed my whole hardware recently , i logged in with my microsoft account and i begged for re-activation in the troubleshooting , so they re-activated my licence in few hours