Question : !!CRITICAL ERROR: Memory retention failure, unflushed cache lost!!!

Walked into this and now the server just cycles never geting past 2003 splash. Any help will be appreciated!

Answer : !!CRITICAL ERROR: Memory retention failure, unflushed cache lost!!!

Sounds like a raid controller issue, others have had this problem
http://blog.stackoverflow.com/2009/03/tuesday-outage-its-raid-tastic/

Sounds like you can also fix it with the latest bios updates.