problem with my Beko de3430fs dishwasher?

i have had my Beko dishwasher for about 2years now and yesterday i tried to do a wash and it started making a low pitched noise that sounded like a grinding (loader than a normal wash) i turned it off and left it for an hour or 2 and started it again, the same problem happend again and still is happening, i have cleaned it all top to bottom and still nothing, the dishwasher fills and drains fine but for some reason is not doing a wash all the plates etc etc are still dry, any help would be appreciated coming upto christmas this could be a major issue,
Thanks in advance