How to fix Braun Tassimo 3107 ?

I seem to be having problems with my Braun Tassimo 3107 with four flashing lights. I have cleaned the bar code reader, tried another T-disc, checked and made sure the water container is sitting level and the float inside reaches the connector inside the water container. It had been standing for a while and now I had decided to reuse it; it had been working previously. Please can anyone help to resolve this problem!