HiMark D'Aloia,
The boot configuration data store could not be opened. Access is denied. This issue can be fixed by running the BCDedit command as an administrator.
Follow this step to do the same:
a. Click **Start,**and then type cmd in the Start Search box.
b. Right-click cmd in the Programs list, and then click Run as administrator. If you are prompted for an administrator password or confirmation, type your password or click Continue.
c. At the command prompt, the following line, and then press ENTER:
**bcdedit /set {current} Description "name you want"**and press Enter.
d. In the elevated command prompt, typebcdedit and press Enter.
**NOTE:**This will let you see and verify the new name of the {current} operating system.
e. Close the elevated command prompt.
When you restart the computer next, you will see the new name listed for the operating system.
Refer these links for more information:
Boot Configuration Data
http://technet.microsoft.com/en-us/library/cc721886%28WS.10%29.aspx
BCDEdit Command-Line Options
http://technet.microsoft.com/en-us/library/cc709667%28WS.10%29.aspx
If the above method does not help, enable the Default Administrator account and check.
To enable the default administrator account, you would have to login to an account having administrative privileges and follow the steps mentioned below:
a. Click **Start,**and select Control Panel.
b. Click the View by drop down menu, and select Large items.
c. Select Administrative Tools.
d. Open Computer Management.
e. In the left-pane of Computer Management, double-click Local Users and Groups.
f. Click the Users folder.
g. Right-click Administrator account and select Properties.
The Administrator Properties window appears.
h. On the General tab, clear the Account is Disabled check box.
i. Exit the Computer Management console.
Refer the link below for more information:
Enable and Disable the Built-in Administrator Account
http://technet.microsoft.com/en-us/library/dd744293%28WS.10%29.aspx
Regards,
Divya R – Microsoft Support.
Visit our Microsoft Answers Feedback Forum and let us know what you think.