Hard Repair Tool

There is a hard disk that was infected with “Wyx” virus which reside o on MBR. an attempt was made by the user of the computer to remove this virus. unfortunately he choose delete when prompted for an action. the MBR was subsequently deleted as a result of this action. Since then the HDD has refused to boot again. There are lots of important information on this HDD. Is there a way I can revive the HDD without formatting?