我正在尝试在 SQL Server Management Studio 中执行以下脚本：

USE [master]
GO

CREATE DATABASE [test1] ON PRIMARY (
  NAME = N'test1', 
  FILENAME =
    N'C:\Program Files\Microsoft SQL Server\MSSQL10.SQLEXPRESS\MSSQL\DATA\test1.mdf',
  SIZE = 70656KB , MAXSIZE = UNLIMITED, FILEGROWTH = 1024KB)
LOG ON (
  NAME = N'test1_log',
  FILENAME =
    N'C:\Program Files\Microsoft SQL Server\MSSQL10.SQLEXPRESS\MSSQL\DATA\test1_log.ldf',
  SIZE = 164672KB , MAXSIZE = 2048GB , FILEGROWTH = 10%)

但我收到错误：

Msg 5123, Level 16, State 1, Line 2
CREATE FILE encountered operating system error 5 (Access is denied.)
while attempting to open or create the physical file
‘C:\Program Files\Microsoft SQL Server\MSSQL10.SQLEXPRESS\MSSQL\DATA\test1.mdf’.

Msg 1802, Level 16, State 4, Line 2
CREATE DATABASE failed. Some file names listed could not be created. Check related errors.

已经拥有我的用户的所有角色权限，有什么问题吗？