Starting problem

I had this problem (2) times the first time it happened I had to replace my starter, then every thing was fine until I stopped at the store one day for maybe (5) minutes when I came out to start the car I turned the key an nothing happened, the last time I had this problem before the starter problem I could let the car sit for 30 minutes and it would start but not this time. This time the problem was the chip in my ignition key I got anew key and now its fine, but I suggest you have the starter checked first