'Ember new' throws 'cannot find module' error Windows 10

I'm trying to learn ember and had an install that worked fine. Not sure what happened but suddenly Ember new would throw the following error:

$ ember new app
module.js:327
    throw err;
    ^

Error: Cannot find module 'debug'
    at Function.Module._resolveFilename (module.js:325:15)
    at Function.Module._load (module.js:276:25)
    at Module.require (module.js:353:17)
    at require (internal/module.js:12:17)
    at Object.<anonymous> (C:\Users\ConquerJS\node_modules\ember-cli\lib\cli\index.js:6:21)
    at Module._compile (module.js:409:26)
    at Object.Module._extensions..js (module.js:416:10)
    at Module.load (module.js:343:32)
    at Function.Module._load (module.js:300:12)
    at Module.require (module.js:353:17)

I tried to manually install the missing modules but then the same error comes up again with a new module it can't find. I get this error in git bash and windows cmd running both as administrator.

I was so at a loss and in desperate need to get up and running with ember today that I reinstalled windows on my machine thinking this would get things working like they did earlier in the day, but I still get the error. I updated npm to the latest version and still get it. Now I get it as soon as I type ember -v even though it worked on an earlier install.

I thought maybe something happened with npm so I went on my old desktop and installed ember and it works fine (but unacceptably slow on its old amd processor and hdd).