If you wanted to start a batch file or any other executable from a command prompt as administrator user then its better to start the command prompt itself as administrator.
To start command prompt as administrator, type cmd in the run window.
Now instead of hitting the enter key, hit “Ctrl + Shift + Enter” together. This will open up the command prompt in administrator mode.
A dialog box will pop up to confirm.
Click on Yes button. This will open up the command prompt as administrator. Now all the commands and batch script you run in that command prompt will be executed as administrator.
Note : I have tested this only in windows 7.