I might have a fix for you as it has just worked for me on my desktop PC.
If you have anything installed, use REVO uninstaller to remove everything using moderate mode. Then restart and begin installation, leaving the USB cable unplugged throughout this process and select updates as and when required (I'm on SP3, version 2.1)
Now that everything is installed, restart your computer (tedious, I know) so everything is refreshed and all set up.
Then go to control panel - accounts - create new account but don't opt for a new Microsoft account. Once this account is set up, go back into account settings and give your new account Administrator privileges. Logout of your main account and switch to your new one.
You should see Roxio already set up on your desktop, the default file path. Select the exe. on your desktop and click capture, then plug in your RGC. It should then come up detected HDMI/Component and be ready to go. If you have HDMI/Component showing in your input section but no signal, just restart the software keeping your USB plugged in.