Windows server 2008R2, has been working fine. Experienced power outage and for a reason not know, the backup power supply did not work properly. Had to force server to power down. Once restarted, several computers logged in properly and all drive mappings, using the drive mapping feature new to Windows 2008 with tne addon loaded for WinXP. However, on serveral computers, you could log in but the drive mappings did not appears. If we disconnected from domain, deleted computer and DHCP lease, then reattached to domain, then logged on and drive mappings appears. However, on some computers, this still would not work.
Any suggestions on what is causing the problem and how to resolve.