I've done everything from these two questions:
node.js Setup Wizard ended prematurely
Node.js Setup Wizard ended Prematurely on Windows 7 32 bit
I've got the log, but I can't tell what's going wrong in it. Here it is: https://drive.google.com/file/d/0BxhpRUnYxJGhSzhrd0ZyNHlMTm8/view?usp=sharing
I've also tried installing it with Chocolatey, and I get an error 1603, which, from what I've read is just a generic MSI error that's of no help.