This particular HP laptop was displaying strange graphical artifacts across the screen. We only had to remove the keyboard to find the issue of a large dust build up. The dust build up was so bad inside the laptop that it had gotten into the display cable connector and was causing an intermittent short circuit. Needless to say it had a full clean out and is now good as new. However this shows just how important it is to have your laptop serviced at least every 2 years, preventing this type of problem from ever happening.
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