Login failure due to profile

Hello,I am receiving an error message that says “unable to load profile” when I attempt to logon via a particular name in my domain.According to the user,he didn’t do anything differently.On other machines,I can gain access to the network,however,things are slow,and he can’t access things he normally has permissions for.I am at a loss.Any help would be greatly appreciated.

Thanks
Rennard Snowden
Datacom Telecommunications
908-206-8974