Check to make sure the dishwasher is plugged in. While this may seem obvious, an electrical plug can sometimes wiggle out of the outlet without your knowledge, particularly if your dishwasher has an imbalance or rocks otherwise.
Inspect your circuit breaker box to be sure a circuit has not been tripped. If the circuit is tripped, it should be flipped to the "off" position or the neutral position. Simply flip it back the other direction to "on." In most circuit breaker boxes, the circuits are labeled so you can easily tell which one corresponds to your dishwasher.
Locate your dishwasher owner's manual and find the fuse diagram. If you are unable to locate the dishwasher owner's manual or a fuse diagram, you will have to check all the dishwasher's fuses.
Unplug the dishwasher.
Examine the fuses to see if you have blown a fuse. In order to check the fuses, you will need to remove the front door panel. The fuses are located behind the panel. Visually inspect each fuse to see if the small wire is still intact within the fuse. A blown fuse will have a split wire instead of an intact wire.
Replace any blown fuses by pulling the old fuse out and snapping a new fuse back in place.
Put your dishwasher door panel back together, plug in the appliance and see if the lights work properly. If not, you'll need to call a repair technician if you can't live with a burned out power light on your Bosch appliance.