Turn key to start and nothing

check fuses and relays --inspect the battery and lines for damage ,corrosion or disconnection

More info please.

First I would look for voltage drop of both end of battery terminal.not a look or seem tight . you have to do it (voltage drop) and terminal at alternator.
now does alternator charging. take voltage of battery
if the problem occur have voltage of battery taken
like I read your problem it looks like wiring terminal ground and positive
the noise you hear is probably low voltage to a relay and the dropping voltage make the relay switch inside relay cycling noise click or buzz

Battery is corroded, clean it and charge your Battery... Then see what happens...

A dead battery will not start a car

Dead Battery?

try get an auto electrian try operate the starter manually from the engine compartment.You should be in a better position to pin point the cause of trouble

Have the charging system checked!! Alternator may may have failed!!

I would say that you need to replace the alternator. The car was running on the batteries power. When you drove the car, it ran the battery completely dead.

yes it is the battery,was it a little cold out this mornin??? cold weather usually exsposes the bad batteries in vehicles,and sometimes there is no warning but your battery is old and should be replaced,hope this helps

Last night I checked the battery and it was still good. I disconnected and then reconn ected both terminals and that brought the power back. When I turned the key the power went out again. I repeated the procedure but did not turn the key. Instead, I took off the knee bolster and tried to wiggle the wires under the dash to see if I could find the source since it seems to be related to the ignition. Nothing cut the power so I started it up and it worked fine except for the check engine light which was flashing that says I have a misfire condition. I drove the car 25 miles to work this morning and will be taking it to the dealer for a better inspection.