Why does this card not work?

Ok I thought I knew a lot about computers but this is really stumping me. I had a crappy intel onboard graphics that ran gw fine at the lowest settings. Now I guess gwen graphics were too much for it cause it started kicking me out to windows with an error box something about not receiving or displaying graphics and I had to restart.

So my boyfriend went out and got me a NVIDIA geforce 8500 GT Fatal1ty which I promptly installed. Now it doesn't get that blue error screen anymore but the entire screen will just darken and freeze in certain areas (for example the area of sacnoth valley in the burning part before the dungeon there) The game is still running, I can hear my valient heros trying to keep fighting and so on, but the graphics part is frozen. Sometimes I can force quit the game back to windows but I'm finding it hard to vanquish this area with this problem. There will be other graphics errors too such as the entire screen blinking on and off yellowish tint to everything, or parts of things (people's legs, chests etc) not showing up at all, or random textures will suddenly appear as yellow boxes or something. I added a second fan on the video card in case cooling was an issue but that didn't help. It's back at the geek squad now but frankly I have little faith in them as they've had it 4 times and the problem is not fixed.

Has anyone had a similar problem, or know of an issue with this card and gw? I haven't been able to play all weekend basically because of this, and now they want to send my computer away for 2 weeks to see if they can diagnose the problem

the card might be faulty. if they haven't given you a new card, they're almost scamming you. the only way to "fix" a faulty card is with a high-powered, industrial grade laser. which, i assure you, the geek squad does NOT have.

return the card and get a new one. the 8500 GT is not particularly fast anyway.

Got it fixed without sending it away. Added another gig of ram, apparently pentium 4 chips are bad at using ram and need more or something, and found out my computer was using hyperthreading so I forced it to stop that and have no problems now playing with graphics on the highest settings.