Apparently your Windows operating system is configured to not show those entries. Rather than pursuing this route you might try the following...
Download and install this free tool. It will be listed as Revo Uninstaller in your programs menu. 
Run Revo. Find the Videopad entry, right-click and UNinstall.
After the Videopad installer completes, click Scan, then Delete all registry entries. It may present several pages. When it prompts "Finish" click that to exit.
Now install the latest Videopad version.
If that doesn't succeed, try another PC if possible.