Weylok

I got a GeForce6 6600GT 256mb AGP slot graphics card a few days ago. I was playing games fine, and everything was running smooth other than the fact that whenever I tried to watch movies (I tried my Family guy + Scrubs + WoW files) the computer got really slow while trying to load, and after 20 minutes it still wasn't loaded so I reset my computer and tried again, same effect. Last night I tried again on a WoW movie, and same thing. So I reset my computer but this time, after the Windows Home loading screen went away, my screen went black, nothing was loading, nothing was happening. I've tried everything I can think of, but I cant get past it. Nothing works! >< Please, any advice would be awsome. I've got 7 weeks of holidays, I need my computer!! @_@ EDIT: Oh, and I tried my old graphics card, same thing happened. So it's not busted, at least, I don't think.

Anyone?

Thanks for the replies guys... I understand everything said, but I don't understand how it could have overheated, I haven't touched the PC other than to turn it on in months. How can it just get extremely hot and blow up? I checked everything, and couldn't see any burnt areas. It must be my graphics card. If it was burnt so I can no longer use it (Which I'm guessing it is) and I, for some reason, can't get a refund.. what graphics card/s would you guys suggest for AUS$400-600? Any replies would be great! ^^

Alright, I guess I'll start from the beginning... I got my card.. somewhat a year ago, mabye 10-13 months. I got it for christmas and I dont know where the receipt is so dont say to get a refund. 3 days ago I was playing WoW, as usual, when the pixels on the game started screwing up when I walked. Like, I just walked along and squares of green and black started coming up. I thought 'Meh, bugged area' and kept walking. Then it got worse, and eventually, there were huge ass glitches in the area, big wall things coming through that I could walk through, and I eventually couldn't see shit. Then I noticed the smell. Bad smell. Nothing had changed with my comp but it smelt like it was heating. I checked, looked fine *Shrug* And NOW, its making weird noises, like... oh I cant explain it. Like sometimes a car trying to start. I only have my fan on my processor and on my gfx card, because I have the side of my PC off and its cooled. I think. So yeah... I swear its my gfx card, as I've asked other people and they say it is, and I just have a hunch it would be.... I kind of rushed this because I didn't want it to blow up in my face x_X So some things may not make perfect sence. Any help at all would be awsome - ATI 9800PRO - Screwed graphics only stuff that moves. - Funny noises - Funny smell - Not a good comp mind you Please help! I want to play WoW again xD