Bosch Dishwasher not draining

Hi,
I have a compact Bosch Dishwasher SKT5102 which is not draining the water. I have cleaned all the filters and checked the pipes. Anybody know any clues. I have tried to remove the cover but it is a little tricky. Thanks in advance.
Steve :

Not familiar with exact model but principal is same in any dishwasher.
If it aint pumping out you have one of the following problems
1 blockage or kinked pipe
2 pump is U/S check it has continuity
3 pump is blocked [ I usually find a cocktail stick or some other foreign object stuck in them ]
4 pump has no power to it telling it to empty = programmer or wiring fault usually

Not dissing you here but if you cant figure out how to get cover off I think you may have probs sorting the rest out. Might be better getting someone in to fix it!