There is some issues with a few machines but a new machine issue is very very rare. Try this on google, make the change and if it fixes it, take the PC back and try another.
-> Disable Flash Hardware Acceleration.
Whenever I try to watch a video on YouTube, my brand new HP all-in-one computer with Windows 8 will stop allowing me to use the Internet. I will get a webpage not available on every site I try to open. I have to shut down and restart my computer every time. Is there something I can to prevent this other than staying the heck away from YouTube?