hey man you know its very possible u can have a drain on ur battery if that is the case lol i cant diag it from my computer...and unless theres an aftermarket alarm system i dont think thats ur case either...but i can tell you that i had the same exact problem ur describing and it ended up being my starter because the starter was drawing soo much amperage trying to start the car it would acually kill the battery so u might wanna check that out...u can grab an DVOM that has a amperage hookup and go to start the car and see how much its drawing