The buzzing sound is most likely the started solenoid chattering due to low battery voltage, change the battery and try again. If it still does it make make sure the engine is not seized and can turn over. Then measure voltage going from the solenoid to the starter, if it is very low change the solenoid
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The buzzing sound is most likely the started solenoid chattering due to low battery voltage, change the battery and try again. If it still does it make make sure the engine is not seized and can turn over. Then measure voltage going from the solenoid to the starter, if it is very low change the solenoid