Hewlett-Packard began manufacturing personal laptop computers in 1993.

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half of screen becomes gray color

what to check in my hp g42. The half of my screen become gray color

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benjie, the grey means that the backlight works, but you are not getting a signal to the complete screen. Attach an external monitor and see if that displays correctly. If it does, you are having issues with either he LVDS connector, the cable or the LCD itself. If it does not work, the GPU on your logic board is/has failed.

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