Not quite sure what yr problem is here.
Are you running as the REAL Administrator rather than as a User with Administrative rights?
Sounds like a permission problem - check permissions and acls
Or see:
Win7/WinXP dual boot issue
and also
WinXP to Win7 lost dual boot
and also
failed to start file: \NST\NTLDR status: 0x000000f - Windows 7 Help Forums
Else Run gpedit.msc and goto
Local Computer Policy/Computer Configuration/Windows Settings/Security Settings/Local Policies/Security Options and enable the following keys:
Recovery console: Allow floppy copy and access to all drives and all folders
Enabling this security option makes the Recovery Console SET command available, which allows you to set the following Recovery Console environment variables once you are in the RC.
AllowWildCards: Enable wildcard support for some commands (such as the DEL command).
AllowAllPaths: Allow access to all files and folders on the computer.
AllowRemovableMedia: Allow files to be copied to removable media, such as a floppy disk.
NoCopyPrompt: Do not prompt when overwriting an existing file.
[Set the first three to TRUE, eg. "Set AllowAllPaths=TRUE"]
Default: This policy is not defined and the recover console SET command is not available.
Recovery console: Allow automatic administrative logon
This security setting determines if the password for the Administrator account must be given before access to the system is granted. If this option is enabled, the Recovery Console does not require you to provide a password, and it automatically logs on to the system.
Default: This policy is not defined and automatic administrative logon is not allowed.
Now get into your Recovery console and try again. If this is a permission problem you'll need to fool around with icacls.
And Milo, EasyBCD is not a third party bootloader, it's just a GUI tool that makes it easier to configure and tweak the Boot Configuration Data (BCD) boot database.
Mac