The easiest way to troubleshoot a Hampton Bay ceiling fan is to read the owner's manual for the particular model. Each Hampton Bay ceiling fan manual has a section dedicated to troubleshooting with multiple suggestions to remedy specific problems.
The owner's manual for a Hampton Bay ceiling fan should have been in the same box as the fan at the time of purchase. If the manual is lost, a copy can be viewed online at Hampton Bay's main retailer, Home Depot. If the fan was purchased from another retailer, they can typically provide a copy of the owner's manual.
Common troubleshooting suggestions include verifying the fan is being powered by checking both the power switch and the related circuit breaker. Noise and wobble complaints are frequently corrected by ensuring all screws on the fan blades and motor housing are tight. Another way to correct blade wobbling is to interchange two blades, as this can help with weight distribution. Any examination of the fan or repair work should be done with the switch in the "off" position to ensure safety.
If there are any loose wires, open connections or problems with the circuitry, turn off power to the fan and contact a licensed electrician.