This problem is only happening to one computer that is on a domain none of the users can log on to this computer I was thinking that the computer profile got corrupted will joining the computer the domain sort this problem out?
I ran into this problem with a Win 7 computer today. I'm not sure if it will work for you, but I'll tell you what I did. First, I created the computer in active directory users and computers. Once that was done, I went to the computer and went into the network adapter's IP4 properties. It was set to get a DNS server address automatically, so I changed that to be the DNS server on the network. Once I did that, the computer was joined to the domain and all problems magically went away. After a reboot, I changed that DNS setting back to obtain an address automatically. I have NO idea what caused the problem to this one computer or why that fixed it. Anyway, might be worth trying if you are still having the problem. Good luck.