ok so might as well get this out of the way
The crashes i can describe as occurring most often when i'm playing a video online. But sometimes it happens when i'm gaming.
But if i'm gaming my PC generally avoids the crashes. The only way i can keep the infernal machine happy is through eternal gaming. If i so much as risk watching a youtube video, the whole PC fumble-forgets and the screen screws up. The screen often shows multiple stripes of the last color i saw on the screen. (like game grumps orange).
I'm not sure if its the video card anymore because you said it could be memory. So i'm trying to get this mem test to work so i can find out.