macbook pro early 2011

Hello, I have MacBook Pro 2011 and after the logic board problem I can't log to my MBP ! I have very important data on it! Now I have a PC with windows 10 how I can get my data again ? Note: The MBP had a password when it was work properly. Thank you.

My friend has a MBP 8,2. It's been switching off (completely dead) all by itself, and even starts up on its own at times - ghost in the machine? Battery is charged and/or AC connected at the time. Recently I have installed a Samsung 860 500Gb SSD, and 2 x 4GB ram, and the laptop started...