How can i remove one administrator account if i have two on my computer?

Click start Control Panel.

Select "User Accounts and Family Safety," then "User Accounts."

Click "Turn User Account Control on or off."

Remove the check mark next to "Use User Account Control (UAC) to help protect your computer."

Click "OK."

Set All Accounts to Administrator

Still in the UAC section of Control Panel, select "Manage another account," and click on a user account.

Click on "Change the account type." When working with multiple accounts, some changes can only be made if you and the account holder are both logged in with "Administrator" accounts so you need to change all user accounts to "Administrator."

When you are done making changes, you can change them back to "Standard," but always leave at least one "Administrator" account.

Select the "Administrator" radio button.

Click "Change Account Type" at the bottom right.

Repeat this procedure to change each user account to "Administrator." When all user accounts have been changed, close the Control Panel.

Create a Full Administrator Account

Click "Start" (the Windows Vista icon in the lower left of your screen). In the Search box, type "cmd". Right-click on "cmd," and select "Run as Administrator." An elevated command prompt window will appear.

At the command prompt, type "net user administrator /active:yes", and press "Enter."

Choose a password and assign it to the "Administrator" account, by typing "net user administrator 'password'", where 'password' is your selected password. For instance, if your password is "abc," type "net user administrator abc". Press "Enter."

Type "exit" and press "Enter."

Log off. When you log back into your "Administrator" account, you will have full rights.

hope this helps

what operating system ? and what type and brand of computer desktop laptop ?

Often many users will leave the administrator account alone or have other accounts with administrator rights. If you're not logging into the computer as administrator or have other accounts follow the below steps to reset your other accounts password.

Reboot the computer into Safe Mode.

When logging into Safe Mode you should be prompted with an option to what account you wish to use. Select the Administrator account. If prompted for a password try pressing Enter on the keyboard for no password. If this does not work, try other passwords you may have used. If you're unable to log into the Administrator account skip to the next suggestion.

Once you've logged into the Administrator account open Control Panel and User Accounts.

In User Accounts select the account you wish to change the password for, click change password and then enter the new password or click remove the password to remove the password from the account.

hope this helps