You may receive a "One or more services failed to start" error message when booting a Windows 2003 Server installation which may or may not be accompanied by an Event ID 7000 in the system event viewer. This is caused by the WLBS service. To resolve this issue, modify the following registry key:

HKLM\SYSTEM\CurrentControlSet\Services\WBLS

Change the value of Group from PNP_TDI to an emtpy string. More information regarding this regfix can be found on Microsoft's KB: http://support.microsoft.com/kb/833375.