Easiest way to tell if your fan is working is to open your case and then boot your system to visually verify whether or not it is working.
More than likely, your video drivers are not installed correctly. I am not sure about the PNY Verto 9600 Ultra, but I know many video cards require you to install the drivers FIRST, then shutdown and install the card.
Would help the troubleshooting process if you gave your operating system and system specs.
Oh, and Welcome to Techimo!