The following files were exported from a pristine installation of Windows 7 Ultimate x64 living inside a virtual machine created by VMware Player. So, they represent a default (clean) copy of the registry of that windows system before installing any software on it. (Well, except for VMware Tools.)
Here is the .ZIP file containing all the .REG files. (9.5 MB)
IMPORTANT NOTICE: The location of these files may change in the future, but the location of this blog post will not, so if you want to provide links, please make sure to link to this post, not to the actual .reg files.
For reference purposes, I needed to get my hands on a default (clean) copy of the registry of Windows. I could not find anything on the interwebz, so I had to load Windows into a virtual machine and extract the registry from it. I figured that this may be useful to many people out there, so I have posted the results of my labor.