I installed nodejs in C:\\Program Files (x86)\\nodejs
then I created a .js file and saved it in my desktop just to output \'hello world\' in the console:
I had a nearly identical issue, turned out my JS file wasn't actually in the folder I was calling it from, and I had gone one folder too deep. I went up one directory, ran the file, it recognized it, happily ever after.
Alternatively, if you go one folder up, and it gives you the same error, but about a different module, take that same file in your parent folder and move it into the subfolder you were previously trying to run things from.
TL;DR- your file or its module(s) is not in the folder you think it is. Go up one level