If you want to bypass google account from your device then check here, mine have Samsung S9 and i also faced the same issue, and this guy was help me a lot- https://www.gadgetsdr.com/category/bypass
do not upgrade from win 7 to win 10
get the win 10 program and install it separately
there are compatibility problems in the up grade which will affect the win 7 operating system
you are password locked to the other persons account fixya is an online repair forum we dont have access to or are associated with personal or corporate accounts --we dont and cant unlock or hack electronic equipment