Hi Sonia,the buzzing will be the fill valve,the water coming from the back left is also the filling port.With these machines,they drain first.As the error is coming up really quickly, it may be that the drain pump is jammed.You have to take it apart to do this and I would not recommend a customer to do it.The parts are sharp and to get the pump to reseal is awkward.
All the best.
Foxy, August 2008