Hello, I have been very frustrated as my monitor has a pixel that's permanently greyish/black. I think it's a dead pixel. However, when I use that UDpixel utility that rapidly flashes colors on that pixel, I can see it flashing. So is this a dead pixel or a stuck pixel? Can I fix this? If so, how? Just to add, I've had UndeadPixel on for hours now, with no luck.