I have a big problem with my laptop. There are about a week while I was watching a video, my screen has started to make colorful streaks and froze. I rebooted and it was redone, sometimes it's also the squares of all colors. Every time I start up, it sure is when the Windows startup screen appears. I do not know where it comes, but even in safe mode the screen is not clear, the icons disappear and be replaced no white lines. I reformatted yesterday and he walked again until I installed the drivers. I think the graphics card of my laptop is dead but I'm not sure. It's a GeForce 6800. Has anyone had this problem ever before then please reply. is it possible to change the graphics card of a laptop .
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