By default, as you may already know, Microsoft had disabled by default the “Administrator” for our own good.
There might be some cases where you need it enabled. Since it is hidden from the user friendly accounts manager in control panel and the “advanced” MMC under Administrative Tools / Computer Management isn’t available in Home Editions, there is a way of doing it using the command line.
1. Open the Command Prompt with elevated privileges (Admin)
2. Enter the following command to enable the account :
net user Administrator /active:yes
3. Set the password for the “Administrator” account :
net user Administrator <password>