This is how the keys look on my computer. I might have changed some values, but probably not a lot of them...
In general, for this kind of edge case it might just be better to install the vn from scratch using an ISO, mounting etc. It's possible the installer is able to check for compatibility issues and adapt to them.
Sorry it took so long to get back to you (getting ready to move)! I checked the registry values and they match up exactly with yours. I suppose I could try installing it from scratch - I'll give that a shot and let you know how it goes. Thanks for the help so far!