I have a Windows 2008 Server running active directory services. I cannot open Active Directory Users and Computers or any orther Active Directory programs, it says domain does not exist. When I run Netdom query it says it can't find any domains and dcdiag give an error code 1355, it says PDC and GC are both down even know I am working on the Domain Controller. I checked DNS and Ipconfig and both of those are solid, but here is the funny thing. If I shut down all DC's and leave them off for 20 minutes or so and then reboot one of them. I can access the Active Directory programs and the domain for about 5 minutes and hen everything shuts down again. Any help or insight would be great.