Hi, I have bought a Early 2013 13" macbook pro i7 3.0GHz (A1425) It had its ssd removed by the place I bought it from. There is still no ssd inside Powers on while charger is connected, goes black as soon as you take it out. I ran it from external ssd and it was running ok, just extremely slow. I have poped the back cover off and It seems like the battery is connected. It was probably never disconnected while they were taking the ssd out. My question is: *Does SSD not being inside has anything to do with laptop not getting power from battery? *What connections should i check to make sure it is all connected? Also *Is it normal for it to run extremely slow when booting from external drive (16Gb usb2 flash)? Thanks a lot!