Chosen Solution

I’ve tried multiple attempts to power it on with the plethora of videos online, but none of the tricks work. I’ve tried the different command keys, unplugging the battery and attempting with just the charger, I’ve even put in a new battery. Any thoughts would be appreciated.

Can you give us some background on what happened here? So after disconnecting the battery and then plugging in the MagSafe charger the system won’t spontaneously start? If thats the case you clearly have a logic board failure.