Please help. About three years ago we had installed a new Windows 2008 server with exchange 2007 installed on it. Now on the network this server acts as the exchange server and the Domain Controller. About one week ago there was a hard drive failure which caused Dell to come on out and replace it. The drives were on a RAID 5 config so that should not have been a problem for them. About 4 or 5 days after that every single morning we are waking up to the server not working. And when I would log on there would be a ton of error messages from Microsoft MMC and now more recently Windows explorer. And I would have to reboot the entire Server just to get everything back. What the heck is going on ?!?! Please help.