Hello, My Hyundai will not start, i think it might be the starter, but the battery is good and all the lights work and everything, but when I go to start it, I have nothing. I won't crank, click, nothing! We tried jumping it same thing, this just happen and the car was only sitting one day! I'm thinking the starter because the alt. was just changed not to long ago and I guess Thai would be next! Any help would be great, I would like to hear someones opinion

Check on the fuse box, am sure that a starter fuse is blown. the alternator might be the causer. as you said you changed it not so long. When you find out the fuse are ok, check also the solnoid wire on the starter motor beside the main wire, when that is good then might be the carbon brushes are won need to be replaced

Several possible solutions here. I'm assuming you know how or know someone who knows how to check the following items on your car: Check your ignition switch, make sure it is connected properly and is working. Make sure cables are connected properly to the starter. Check the starter solenoid switch (if you can, remove the starter and take it to a store like autozone to have the starter tested for free). Check the ignition/pickup coil. Check that distributor cap and all wires are properly seated (distributor cap/rotor could be faulty). Hope this helps.