If you do a search on nvstreamsvc.exe you will see that it is a service called the Nvidia Streaming Service.
You may not be aware of its existence, but it was installed on your machine when the video card was installed. And it is identified as the culprit of your error in the title of the error message.
Since you don't use it, you could go to the control panel - administrative tools - services:
Look for the words Nvidia Streaming service, and shut it down (if it is running) and then change the properties to 'disabled', and that will prevent the program from running and showing the error message.