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If you notice MacBook Pro Black Lines Bottom Screen issues, the problem can stem from several causes, including a damaged display cable, screen hardware failure, graphics-related glitches, or accidental physical pressure on the display. In some cases, restarting the device, updating macOS, or resetting system settings may resolve temporary software-related problems. However, persistent black lines that appear at the bottom of the screen often indicate a hardware fault that may require professional diagnosis or display replacement. Identifying the root cause early can help prevent further damage and reduce repair costs.