Windows 7: Admin Account Trouble

I am currently running Windows 7 Home Premium 64 bit and this is the trouble that Im running into:

1. When I try and run the command prompt as an admin by hitting ctrl+shift+enter and typing net user administrator /active:yes I get this response:

System Error 5 has occurred

Access is denied.

I get the same error when I right click command prompt and run as administrator and enter the same command as above.

2. When I go into Control Panel - User Accounts and Family Safety - User Accounts - Change your Account Type to change my account from Standard User to Administrator, the change doesnt take effect.

3. When I go into Control Panel - User Accounts and Family Safety - User Accounts - Manage Accounts - Create New Account and type the username as "test" and set it to be an Administrator account, I get this error:

The specified account name is not valid, because account names cannot contain the following characters: /\[]":;|<>+=,?*

Please type a different name.

Someone please help! Im simply trying to get elevated priviledges so that I may utilize the windows backup and restore utility.

It seems that your current login is not an Admin level account. Log in with an admin account.

You are correct! I am not logging in with an admin account. If I could log in with the admin account, I would have already done it. My trouble is not being able to activate or enable the admin account in order to utilize it.

This tutorial will show you how to enable the Default Admin Account when there are no user accounts with Admin privileges:

User Account Password - Change from WinRE

Cheers!
Robert

Im going to try it thanks!