The horror movie image of victims having hands and arms severed in a garbage disposal is entirely a Hollywood invention. In reality, the blades inside a garbage disposal are rather dull grinders, not gleaming, razor-sharp sabers. That is not to say that a disposal should be taken lightly—it is indeed possible to be painfully injured if you don't practice basic safety measures. 

The bulk of a food waste disposer system, which includes the seals and pipes, is located beneath the kitchen sink. Most homeowners use this space to store various items, and it is not uncommon for people to bump or jar the disposal’s pipes when reaching for an item that is in close proximity. If the pipes are struck hard enough, the pipes can shift so that they are no longer sitting properly. Retaining bolts can become loose. Pipes may move, and seals can shift into an awkward position.
But to dislodge whatever’s causing it to be in a bind you can use the hex wrench that came with the garbage disposal. I know most people lose them, that’s okay. Grab your set of Allen wrenches, get the right size, insert it into the recess hole right in the bottom of the disposal, and turn it left and right until you dislodge whatever caused it to get into a bind.

STEP 3 – Clear out the disposal to remove any bits of hard foods, bone shards or other fibrous gunk that may be preventing the grinding blades from rotating and pulverizing your discarded food. Use a tool (a pliers, wooden spoon, etc.) to do this. Putting your hand in situation where whirling blades of destruction are nearby is never a good idea. (That is what I’ve heard anyway.)

You should first find out whether only the disposal is broken, or if the power has gone out completely in the areas near your kitchen sink. Try resetting the circuit breaker that leads to the kitchen, or replacing a fuse if you have an older electrical box. If the garbage disposal makes no noises at all when you flip the switch, you might also want to check under the sink to see that it’s plugged in.

Garbage Disposal Install