Demo video - Computer DIY: Replacing faulty display flex ribbon cable on HP Pavilion DV 6 laptop
When you have a problem with your laptop's display, the problem could be with the LCD display panel or with the flex cable that connects the LCD display to the motherboard. If the display is flickering randomly, it could be the cable issue or loose connection. You may disassemble and try re-seating the cable on the contacts on the motherboard and the LCD display. Also you might need to inspect the LCD Flex ribbon cable and see if there are any wear and tear.
The above video describes how to replace faulty display flex ribbon cable on HP Pavilion DV 6 laptop that got torn during repairs and due to which the display was flickering. LCD display flex ribbon cables are available online and you would need to search for your laptop's exact type. Installation of LCD display and/or the LCD display flex ribbon cable is not that difficult in itself but disassembling the laptop for fixing the LCD display cable is the only hardest part. If you are planning to do it yourself, note the position of the cables and the attachments while disassembling. I would also suggest you to check out videos relevant to your laptop model on YouTube for guide on how to disassemble your laptop.