I purchased a new Lenovo ThinkBook, and I created a new user account, and accidentally disabled the current logged in user account. When I logged in as the new user, to my horror, I discovered that I forgot to make the new user as member of Administrators group and the previous user which I disabled was in fact the member of Administrators group. Windows did not give any warning that I am disabling the only active administrator of the system.
Now I am unable to make myself administrator.
What is the solution now? How can I access my laptop as an administrator. I am using Windows 10 Pro