I was very precise in my reassembly which overall did take much longer than 30mins. After recharging, I can power up no problem and both screens come on with backlight! But no operating system starts up. I have lights, power, charging, wifi... But no system startup!! My IR board is correct (upside down from the above pic, I used another video guide) but I do not know what else could cause this?? Any ideas of what could be loose/missed connection causing this??