How to fix a garbage disposal and dishwasher backup without a plumber

What people tried

Every workaround mentioned in the threads below. We haven’t tested any of them — and nobody here is claiming they worked.

1. 1
   Manually turning the disposal using a hex wrench under the unit
2. 2
   Pressing the red reset button on the bottom of the disposal
3. 3
   Removing connecting pipes to check for clogs with a wire
4. 4
   Attempting DIY fixes to avoid contacting landlords or hiring plumbers
5. 5
   Using an Allen wrench in the center bottom hole
6. 6
   Using a screwdriver or an upside-down broom handle to unstick the mechanism
7. 7
   installing an Air Admittance Valve under the sink
8. 8
   coordinating with a plumber where you swap in the disposal before they arrive and have them connect everything and update the drain configuration
9. 9
   Read the appliance manuals to find instructions for resetting the breaker and clearing jams.
10. 10
    Hire a technician for a service plan or pay for professional repairs.
11. 11
    Checking for higher leaks that drip down and tightening connections
12. 12
    Replacing the entire garbage disposal unit
13. 13
    Eliminating the garbage disposal and replumbing the sink

In their words

Unedited, most upvoted first, each linked to the thread it came from.