> My screen turns green and I have to restart my pc to fix it. it is just a plain green screen, with no writing.
If you disconnect the HDMI cable from your computer, does your TV "default" to a similar green-screen, when there is no "input" being received?
If so, then I think that either the video-card has failed, or the computer has "frozen".
If "brand-new", contact HP Support for trouble-shooting, if that is the original video-card that came with the computer.