Hi!i have a macbook pro and i decided to change the ram.i opened it and i changed it with no problem...but after that i tried to power on my mac and it doesn't turn on at all....!!i changed the ram again with the original and the problem is still there..when i put the charger on my mac it flashes all the time with green light and the battery button at the left side doesn't show anything like it doesn't work.. I tried to reset the mac book pro power manager and to reset the parameter ram but nothing happens... Does anyone know what to do?