WHEN l TURN THEY KEY THE CAR WONT START, IT DOESNT MAKE A NOISE OR ANYTHING WHAT COULD THE PROBLEM BE WITH THE CAR? l BOUGHT A NEW STARTER LAST WEEK SO WHAT COULD IT BE?

did you try to jump it? If you have absolutely no power, no crank, no dash lights,or your dash lights are acting crazy when you turn the key, then its your battery. If you do have power inside the car then you need to make sure the starter you bought is good. If thats good, make sure your engine can actually turn freely by hand turning the crankshaft. If none of these works.. buy a new car.

You have a dead battery. You might have left something on that drained the battery. Get it charged, if it still does not work, get a new battery.

l have an infiniti q45 my problem is different yet ur problem could result of a bad battery .,.check that first buy a battery with the highest cold cranking units possible this will help u in cold weather & less stress on ur starter second of all make sure the connection to ur starter is.,, grounded properly a bad ground can cause a no start & again a bad battery connection can cause total malfunction in ur car no start or anything else working third of all make sure the starter works even when u buy new make sure it is OEM in most jobbers cheaper parts places, the castings r refubished the internal parts r replaced yet there r always dudds new or used once again make sure u have a proper ground

battery connections or a fuse take off cables use a mixture of baking soda and water, a cup with 2table spoons of the bk soda, dip ends in cup pour rest over battery term afterwards rough up with wire brush have,battery checked for dead cells then go from there.

Remove the battery cables from the battery post. You will need a deep socket & ratchet & probably a plier to gently twist the cable back & forth untill they loosen & come off. Do the positive cable first & make sure u do not have the cable touching metal after u take it off. Just let it dangle somewhere next to the battery. Do the same with the negative,black cable. Now loosen one of the hold down strap bolts a untill it becomes loose & u can remove the hold down bolt, long & skinny, from the battery trat y hole. swing the hold down bolt out of the way of the battery. Grap the battery with both hands & lift it out of the car, do not tip it over & it is a little heavy. Put an old rag or towel in the trunk of a friends car. Place the battery into a platic garbage bag & place it in the trunk on the rag. make sure it is secure & can not fall over or roll around. Drive slowly to an auto parts store & have the battery tested under stress, they will do this for free & this will take anywhere from ten minutes to an hour depending on how far gone the battery is. If it tests good put it back in the car, ur battery is good, charged & should start the car. If it is bad, very likely, buy a good battery, the best u can afford & reverse the steps & put it into ur Q, it shoul last for years if ur cars electrical system is working well. It is probably the battery..good luck

Your key lost it is programing. If you have another key/remote I'd try that first.

You do not say what year. Did you replace the starter solenoid also?

OEM or 3rd party mass retailer part?

You have verified all connections and current draw at various components in the ignition to starter chain?