hoover hds555m dishwasher fault?

my dishwasher has decided to leak water all over kitchen floor! the leak seems to be coming from the underside of the unit. on further inspection the internal filter was completely blocked, once cleared dishwasher continued to leak from the same place. i haven't had chance to turn the unit on its side yet, but will do as soon as i get time. any ideas on how to fix or what parts i might need to replace or whether it is completley ruined will be gratefully accepted.
thanks rob.