Today I did my first repairs on my MacBook Pro 2010. I replaced feet, battery and upgraded both RAM chips from 2GB each to 8GB each. The only issue was that it wouldn’t turn on. :( After a little bit of panic and self doubt as to why I would ever consider doing this, I back tracked a bit. I uninstalled both Rams and put my old back in. My computer worked fine. Then I just tried each new and old, in combination, to find the culprit. Turns out that one of the new chips must be defective.
I am a happy girl! I sincerely thank you all for posting your videos ,comments and especially your mistakes. They give me courage and inspiration to forge ahead on this wonderful road of repair! Thank you iFixit and Right to Repair!