What happens if you turn the camera off and then back on while connected to the computer?
I'm not sure you can with that camera. I understand why one would believe that because the of the following statement on the site:
"HDMI and USB 2.0 interfaces
For high-speed video transfer. USB streaming capability allows the camcorder to function as a webcam."
The following statement may be closer to the truth (also from the Best Buy site):
"... and its built-in Wi-Fi lets you directly stream content to any smartphone or tablet."
I could not find that model on the Vivitar web site so I can't verify whether or not Vivitar supports this claim.
You can try contracting Vivitar Customer Support and see if they can help. They are good about responding to customer inquiries.