You can download a free third-party tool to help you identify if your server hardware supports the required features for Hyper-V and BitLocker:
If your processor is Intel, you can use their free Intel Processor Finder tool. Read more about it on their forum: http://communities.intel.com/openport/message/4575
SecurAble probes the system's processor to determine the presence, absence and operational status of three modern processor features:
This Windows Server Catalog site shows what servers are certified for Hyper-V and Windows Server.