My Funai HD 2735 BD2735 keeps coming up with HDD Error?

My system keeps coming up with HDD Error. I have switched off and on again, unplugged and plugged again but it will not go away. I cannot get rid of it, do you have any suggestions so that I can get it to play what I have recorded and also so that I can play my DVDs again.

Pauline
October 2011