Shut off while driving, now it cranks but does not start

So, I have been driving my car all day yesterday and it did not give me any problem at all whenever I got home, but I hour later I went to the store on the way there as I'm driving eventually my car just stops while it's driving like it loses power and it just shuts down. The battery is still good because all the lights and everything works, I can still see it. When I turn the key over the car acts like it wants to start and it makes the noise that I call usually makes while you are starting up the engine, but it won't. A few weeks ago I had the alternator rebuilt and a new battery put in it I had noticed the fellow that had it before me dropped a few drop the fuse into the department under the hood and he got it out by the driver the driver tire he had to cut a spice into the under panel and accidentally nipped the positive wire. Not sure if it was really enough to hurt it. I have been having problems with this car it, has 94000 miles on it, it's almost new.