Lost score

I worked on a score for alot of hours on my old computer, but my computer disappered on day, and when I tried to fins it on my new computer I couldn't localize it anywhere, the only thing I found was an old version that wasn't even half of the original score. I can't recall if I saved the score online or on my last computers cloud, but if I did save it to the cloud, can I find it on my new computer or is it totally gone? I need help