I've taken hard drives apart, removed the platters, wiped them down, shoved everything back together after not finding anything really wrong with it (and this w

I've taken hard drives apart, removed the platters, wiped them down, shoved everything back together after not finding anything really wrong with it (and this wasn't being careful or nice with the platters/heads) and it has worked fine now for the last 6 years... still not sure why at one point it stopped spinning up.