sometimes when you are trying to start the car all you get is a buzzing noise. on 2005 Honda Accord

and then the car will not start,and other times car will start perfectly.

Asked by for the 2005 Honda Accord
have battery test and charging system to start with and also ck battery cables for being tight and clean
1 more answer
If you turn the key more slowly than usual , does that duplicate/exagerate the 'buzzing' noise? That little bit of info will help.