[Q] phone wont boot after flash attempt topic

A couple days ago, within an hour of using my phone and everything seeming to be fine, my phone got stuck at the Galaxy Note II logo. Thinking that it locked up and reset itself or something like that while in my pocket, I pulled the battery because it didn't respond to the power button. after I replaced the battery and turned it on, it stopped at the same screen. After a few attempts, I tried to get into recovery mode and it only got to the download screen. After some research, it sounded like I could maybe flash the stock rom onto the phone and get back up and running. so I downloaded ODIN and found what I thought was the correct ROM and tried to flash it. ODIN gave an error about unable to find a PIT file, so more googleing later, I found a PIT file and tried again. ODIN tried for about 10 minutes and then failed. My phone was still on the download screen so I thought to just try the process completely from the start again. I unplugged my phone from the computer and tried to restart it, I think by holding the power button down but I may have just pulled the battery. once my phone turned off it hasn't turned back on again. It wont even attempt to charge when I plug it into the wall.

So I ask the people who are far more experienced with this kind of thing, did I unrecoverably mess up my phone, or is there something I can still do?