Your profile will be located under c:\users\<username> assuming you performed a default installation of Windows. Under your profile folder will be several folders – each serving a specific purpose.
One of the most important folders under your profile is the AppData folder. This folder is hidden by default and contains many of the unique settings and customizations you’ve done. Anything from Microsoft Office custom dictionaries, offline storage files and other application settings are stored here.
Other folders of importance are the Desktop, Documents, Favorites and Downloads folders. These folders are what I refer to as your core profile folders. While the AppData folder contains a lot of behind the scenes settings and folders, the core profile folders are folders you likely interact with on a daily basis.
You may notice in Figure 2 the numerous “My…” folders – My Documents, My Music, etc. These are left here for compatibility reasons with legacy applications (written for Windows XP) that may expect certain folder structures to exist. If you try going into the “My Documents” folder, you will notice that you don’t have access - this is by design. The My Documents folder is what is called a “junction point” – an OS level shortcut that points applications attempting to use “My Documents” and point them to the Documents folder instead.
Take a look at my other article entitled “Explaining the File Structure of User Profiles in Windows 7” for more details pertaining to specific folders under the Windows 7 profile.