I had the same issue where I wasn't paying attention and did the battery backwards and I opened the flip tab that holds the ribbon cable and it popped off the main board when I was looking at the daughter board to check the fuses. When I tried to power my system on before nothing happened and...
leo @'d me in a thread about his last dream, stating he was passionately making out with a guy he used to know and then woke up while reaching for his crotch, and said that i would "know who 'tf' it is"
and of course i know, it's luke