Please consider the following before performing a restore.

To perform recovery using Windows Server Backup, the operating system account that you use, must be a member of the Backup Operators or Administrators group.

For recovery of operating system to a new hard disk, ensure that the disk that you restore to is at least the size of the disk that contained the volumes that were backed up, regardless of the size of those volumes within.

For example, if there was only one volume of size 100 GB created on a 1 TB disk during backup, then you should use a disk that is at least 1 TB when recovering.

For recovery of operating system, the processor architecture for a given instance of Windows Recovery Environment and the computer whose system you are trying to restore must match. For example, Windows Recovery Environment for an x64 based version of the operating system will only work on an x64 based server.

This recovery method requires the restore target system to have similar hardware and the exact same boot type as the source system from which the backup was taken. Disk adapters are especially sensitive. If dissimilar hardware is used, the restored system might not be boot. For example, if the system backup image was taken from a BIOS-based system, the recovery environment must be booted in BIOS mode.

For server with BitLocker Drive Encryption enabled, make sure to re-apply BitLocker Drive Encryption to the server after a restore. This will NOT happen automatically, it must be enabled explicitly. For instructions, refers to the following: http://go.microsoft.com/fwlink/?LinkID=143722