Windows 7 - Can't log onto guest account

Lenovo G550
Windows 7 Professional
3 GB Ram

I enabled the "Guest" user for my son to use when he visits, but when he tries to log on as "Guest" the message: "The User Profile Service service failed the login" appears.

I disabled Guest and re-enabled, but still the same message.

I created a user name just for him as a standard user, but when he logs on as "Joe", the same thing happens. I created 4-5 other accounts, some standard users, some administrators, but can't log on to any of them.

I have no trouble logging on as myself (administrator).

After searching the forums I find similar issues in Vista, but not for Windows 7, and the registry entries seem to be different in Vista and I don't want to try the fixes in Windows 7.

When I go to C:\Users\ the other accounts I set up, are not listed, just mine.

Any suggestions?

See this tutorial on how to fix this problem. It'll work with Windows 7 also.

The User Profile Service failed the logon. User profile cannot be loaded. - Vista Forums

1. Open an elevated command prompt, i.e command prompt run as an administrator. To do this, click Start, click All Programs, click Accessories, right-click Command Prompt, and then click Run as administrator.


2. Now type the command sfc /scannow and press enter. The System File Checker will start checking the system.

This will resolve any corrupt files within the OS and *may* help resolve your issue. I would do this before tweaking with the registry. Also, please remember to perform a Backup of your files and create a System Restore point before tweaking your Registry!