Often you have to use the administrator account to perform elevated tasks – if you want you can use the built-in admin account for that
There are two types of accounts in Windows Xp, 7 and 8. These are Standard and Administrator. Both of these accounts have their own benefits. The standard account is used by anyone accessing your system to make changes to his/her files, folders and personal documents. But all standard accounts are limited to the changes of their own users, not anyone else’s. However the administrator account gives you complete access to do anything you want with the system including any changes with the other users’ standard accounts.
By default this account is disabled in Windows 7 and it is up to you to enable it. Make sure to protect it with strong password.
1. StepExecute Run and type lusrmgr.msc and press Enter.
2. StepNow in the left pane, click Users and then right click Administrator in the right pane
3. StepUncheck Account is disabled. This way you would be able to enable the admin account.