It's a 64 bit windows.
OS Name Microsoft Windows 7 Home Premium
Version 6.1.7601 Service Pack 1 Build 7601
I don't know what version of Internet Exploiter I have, I used it once when I first got the computer to download Firefox. Unless it has been maintained by Windows update then it will be the one which came with the machine.
The .SVG file was generated by
Graphviz which uses a subset of the full .SVG standard to generate its graphs, it is one of the examples from the manual.
SVG files generated by
Inkscape behave differently (they still don't work in the internal browser but work when displayed in Firefox) they display the raw XML source code with syntax highlighting appropriate to XML, but not the picture.
I have attached a .ZIP file of the .SVG file I was using as a test. Hope this helps.
Testgraph.zip