99 Alero won't start

My 99 alero won't start. It was working fine all until yesterday when I put my key in, turned it, and nothing. It made a little sound like it was going to start but then nothing. No lights on the dashboard no sound when i turn the key. I tried jump starting the car (since there was no ignition lights) but that didnt work either. I also tried the security lock procedure that someone posted earlier and that didn't work.
The battery is only a couple of months old. I guess it's not the battery. Could it be a bad alternator or starter?
I'm not familiar with this........any response would help me
I appreciate it

My 99 alero won't start. It was working fine all until yesterday when I put my key in, turned it, and nothing. It made a little sound like it was going to start but then nothing. No lights on the dashboard no sound when i turn the key. I tried jump starting the car (since there was no ignition lights) but that didnt work either. I also tried the security lock procedure that someone posted earlier and that didn't work.
The battery is only a couple of months old. I guess it's not the battery. Could it be a bad alternator or starter?
I'm not familiar with this........any response would help me
I appreciate it


No lights at all? Could be a loose battery cable.

No lights at all? Could be a loose battery cable.

I got a new battery and the car started but I still have no lights on the dashboard. I checked the spark plugs and they were pretty worn out. Could that be a reason I have difficulty starting the car and no lights on the dash?

How meny mi on the car and have you changes the alternater. when it is going to die, do all the lights come on/ on the dash?