(am updating a post my mom left, cuz she is clueless) a few wks ago i spilled water on my MB 2007. I need this MB for school and am leaving in a few wks to start. well, my rents hav no $ for a new book, so i got a refurbed logic board. Looked up ifixit how to replace, simple but took a long time! after putting it back together (a few screws were missing, incl the ones around the heat sink - not sure why) - i tried to start up, but nothing. The power works - the battery charges up really well. my ram chips are new (i think they're 2Gigs, the HD is new, and now the logic bd is new to me. is there a way i can test to see if the logic bd works or did LapTop Aid send me a crap bord? i'm kinda knowlgble with macs. HELP! I spent my last $200 to fix this. ps i did take my MB into to mac auth repair, and they said it was the logic bd before i got the used one from laptop aid. THANKS THANKS THANKS. pss is there other parts that could be broken from the water damage as why my MB won't power on?