thanks to microsoft support i fixed that issue in my windows 7 link http://support.microsoft.com/kb/947215 Symptoms When you log on to a Windows 7-based or a Windows Vista-based computer by using a temporary profile, you receive the following error message: The User Profile Service failed the logon. User profile cannot be loaded. Back to the top | Give Feedback Resolution Occasionally, Windows might not read your user profile correctly, such as if your antivirus software is scanning your computer while you try to log on. Before you follow the methods here, try restarting your computer and logging on with your user account again to resolve the issue. If you restart your computer and it does not resolve this issue, use the following methods to resolve this issue. Note You must be able to log on to an administrator account to fix your user profile or copy your data to a new account. Before you resolve the issue, log on to Windows by u...