I just recently replaced my altinator and battery and everytime i try to start it its dead what are some possible problems?

It sounds like something is draining your battery down ( could it be paranormal activity, lol just joking). There may be something that is on drawing down your battery. new battery, new altinator it could be a wireing problem also, I'd recheck all wires from the battery and from the altinator. you can use you volt meter to check voltage drop on the batteries hot wire and then see if voltage is present on the starter side of the starter solenoid. good luck with this.

Possible problems are endless, could be the voltage regulator, could just be some sort of drain in the electrical system ie a dome light that is burnt out but maybe the switch is in the on position. when you jump it it starts up? Does it click when you try and start it? It could be the starter or starter solenoid and not a power issue. hope this helps