Message when logging in: "User Profile Service service failed logon. User profile cannot be loaded"

I am using Parallels 9 on an iMac running Snow Leopard. Suddenly, when Parallels boots up and I try to logon to Windows Vista, I get this message and cannot start Windows. Any thoughts? When I do a repair permissions on the Mac, I get a warning that an "SUID file has been modified and will not be repaired." Is this part of the problem?

 

Hi CherylR,
Please follow the instructions given at http://kb.parallels.com/120405 and check how it goes.

 

Unfortunately, all these resolutions assume I am in a Windows environment. I am using a Mac and when I use Parallels to get to Windows Vista, and then try to login I get the message. All the solutions assume I am already working in Windows. Thanks, anyway.