All the sudden my MacBook Air stopped powering on. I tried holding the power, the option+command+P+R and/or Power. Nothing, no noise at all. My charger seems to be working and will go from orange to green after a few hours of charging. When doing the SMC reset, the MagSafe does change colors for a few secs. I opened the back and disconnected the battery for 10mins, put it back and it still won’t start. I then tried detaching the touch pad as well and still nothing. In addition, while the battery was detached I attached the charger, but it still wouldn’t start, nor would the fan start. Do you think it’s the logic board? Any suggestions welcomed!