Due to a recent demand for help with home networks, I have decided to write this instructable on how to troubleshoot your home network. If you are not already familiar with the basics of how your network works, I suggest reading my previous instructable "How your home network works
I will be providing instructions for Windows XP and Windows 7. If you are using Vista, it is very similar to Windows 7, so follow those instructions. If you are using Windows 8, you're on your own.