I'm fairly certain some data on my server got corrupted and from a dialog box that popped up I think one of the things that got corrupted is logonui.exe

I think this because while the server goes through BIOS and the windows loading splash screen, when it finished that it goes to a black screen with just a mouse cursor that I can move around. But most of the services come back up, for example: DNS, DHCP, DFS, and the print service all load up while it's sitting on the black screen.

Is there anything I can do to repair the logon screen? Maybe copy a file off another copy of Server 2008, get something off the original media (which I have) or bring the system back to a previous restore point?

Thanks! I'm in the weeds right now...