I have a dc5700 computer on our domain that will not keep the correct time. The windows time service is on and when I restart it the clock resets, but it will not stay current. It seems to slow or speed up somewhat randomly and since it is on a domain it is causing multiple problems. I have followed windows advice on making the windows service tie to the domain controller and it did not help. I have also checked the bios clock and it is correct. When the computer is restarted it resets to the correct time. Any suggestions besides wiping out the entire machine and starting over?