Windows 10 & VST instrument plugin's

I notice quite a few people have updated and are not having major issues.
Well I’ve installed and its working WRT audio & cubase supplied plugin’s but my other instrument VST’s are borked, they either won’t load or if they are found, just don’t work.
I’m running as an administrator.
Perhaps its because I’ve done a fresh install of windows 10 & not an upgrade?
Anyone have any suggestions for fixes?

OK I’ve got it working now, I’ve installed the old version of sonar that I had (I was always of the understanding you just need to copy over the correct vst dll’s into the right directory and then wham bam) but obviously not.
I do have to say installing sonar on win10 was a hell of a lot smoother than installing cubase on win10