preview issue in CD X6 home&student

This is my first time on this forum. Im posting this message. As I have went through a few suggested fixes. When I have the CDX6 H&S running. And I go to FILE/OPEN I can't preview the .cdr files at all and even there is no preview in window explorer. The issues started when I tried using CDX8 and uninstalled it and went back to x6. This then brought about a issue the no preview. I have tried the shell extension removal for. The version for CD shell ext...is ver 18. It wont uninstall no matter I use. I have re-installed CDX6 H&S and nothing works. If the shell can't be removed what more can I do. To get the preview working.

If more images and more information are needed I will post.