Lost administartor rights - Microsoft Internet Explorer 9

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.