Nvidia Graphics Card problem, blue screens and reso changes

Hi, I play CS:GO on the computer pretty often and the computer I use wouldn't necessarily be called a reliable or good computer for that matter. But Recently ( yesterday ) I was playing and then randomly my computer started having screen tears and then it eventually blue screened. I let it do it's thing, but during the reboot, the resolution had been changed ( black bars on top/bottom and both sides ) and there were a bunch of random zig zag lines on the screen. My normal resolution is 1920x1080 and now since the crash yesterday I can't change it any higher than 1280x1024. I've tried updating my drivers and nothing has changed it. A friend told me to try and open Nvidia Control Panel and it says something along the lines of "Nvidia display settings are not available - There is no display currently connected to an Nvidia GPU". I have no idea what that means as I am by no means a computer wiz.

Graphics Card - NVIDIA GeForce GTX 280

Thanks in advance guys.