What about using AMPPS? It's an alternative to WAMP made by the Softaculous company.
I know they have support for MongoDB and I believe it supports Node.js as well. Running that instead of WAMP could be a possible solution?
I use AMPPS on my Windows 7 machine, but I have yet to experiment with any Node.js on it so I'm not too sure if this would be a solution to your problem. Just a suggestion to look into though!