IT Community Malaysia

The dark shadow on computer screen can be seen either as a black spot or as a shadow corner and sometimes as a patch that creates problems in viewing any images. The reasons could be faulty pixels, problems with backlight, screen pressure, loose connection of the screen, and graphics drivers problems. First you need to restart the computer to check whether the same thing happens on different backgrounds. You also can take a screenshot and check it on another computer. If the dark shadow appears on the screenshot, then there is something wrong with the software and with the graphics settings, otherwise there might be something wrong with the screen itself.