OCS 2007 R2 services hang at Starting on rebooting Windows Server 2008
Resolution:
Open Registry Editor
Navigate to HKLM\CurrentControlSet\Serivces\HTTP and create the following Multi-string value: DependOnService
Double click the new DependOnService value that you created
Enter CRYPTSVC in the Value Data field and click OK
Sources:
http://support.microsoft.com/kb/2004121