punto wont start help please?

help!

Im new to the fiat punto world and im no expert with cars so please go easy on me! if anyone answers me could you please answer with the idiots guide...

Got a punto 1.2 elx 16v on x reg..its been stood a while but im having problems getting it started..jump started it yesterday to get it home and once it was going it started ok..this morning it wouldnt start so i put another battery on and it started fine..took it for a 2 min run stopped and parked up,left it for maybe 15 mins and now it wont start again?..the lights on dash all come on ok but theres not even a crank when i turn the key to start?..the 'key code' light on the dash comes on at first turn of key and stays on?..also when i turn it to start the battery sign on the dash flashes?

Help!

I'd really like to be a fiat fan especially the Punto but im so frustrated.

An answer would be fantastic as ive been told the members on here are the best

Please answer with the idiots guide! Many thanks

Paul(new here today)