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Well, I'll tell you, I recently changed the graphics card from a Shappire vapor x 5770 Ati to an Nvidia Geforce Windforce 760 GTX. So far, so good, the thing is that I've been observing for over a week how on the desktop or some wallpapers, especially all the gray and dark ones, I see dots scattered all over the screen. These dots are tiny and are like shiny, I looked it up on Google and they say they are hot pixels that get stuck or something like that. It's curious because previously with the old graphics card it didn't happen, which doesn't mean that the new graphics card is defective because it works wonderfully with games and during the game none of the points I mentioned appear. I don't know if it's a problem with the monitor and it just happened to coincide when I renewed the graphics card or it's the card but I don't know what to do. The monitor is a 21.1" LG model Flatron E2240S LCD and it's about two years old. I uninstalled all the old Ati drivers, running two cleaning programs until I found no trace and I still have the problem, I applied a program that they said could fix the problem based on a constant color exposure for hours to eliminate those pixels and nothing. Please, if anyone can help me and give me an idea if it could be the monitor or the graphics card, then if it's the latter where the problem resides, process the warranty already.