For future reference, your notebook model is specifically zv5365EA from the zv5000 series. It's like buying a Toyota Camry but looking at the LE, SE, and XLE there are different features.
Anyways, the memory that you purchased is correct for that system @ PC2700 / 333 Mhz and your laptop can take 2 GB. I would normally look at the memory as the culprit here (considering that it is infact Kingston as well - bad) but you say the problem exists no matter which memory module you have in so I'm somewhat stumped.
Try and reset BIOS to factory defaults, and use the original memory in their original positions. See if you can get it to boot then.
Also, run the memory check I mentioned on each stick - meaning put in the 1 gb chip in by itself, boot to memtest and let it run on there, then the 512 on it's own, etc.