Chosen Solution
I swapped the dead HDD for a new SSD and the system will not power on. I verified the battery is plugged back in and unplugged it again for about 2 minutes. No power indication from the cord charger either. No lights period. Looking for ideas. Thanks.
Press the battery check button on the side and see if you get any indication that the battery has a charge.
Have you tried of installing the system ( macintosh )? You should do a time machine backup to a harddrive / usb.
