I have a Dell Power Edge R710. The time sets back exactly 12 hours every time I restart. So if it's 10:00am Monday and I restart the server it comes up with 10:00pm Sunday. The day before. I have checked Bios and it is set correctly.
Big problem is this is a Domain Controller and when it boots back up with the wrong date and time the Exchange Server changes it date and time and causes users to not be able to access their mail. As well as many other server and workstations with the same time issue.
If I fix the date and time on this problem server I then need to restart all the other servers to get the correct time and then after about an hour everything is working again.
Just need to know why the time is going back 12 hours and how to stop it from happening.