I have asked many times and whilst some answers are well meaning haven't got this working yet. I hate to post a "bump" message (in fact this is my first, ever) and but this seems such a basic question. Either it won't work, I am doing something wrong, I haven't asked in the right place (or the right way) or I need new aftershave.
Here are the unanswered questions:
Why does the web based install of Magento 2 on Windows 7 localhost using XAMPP always fail?
Magento 2 CSS and JavaScript not loading from correct folder