remove the top plastic cover of the cd/dvd unit) NEVER touch the eye/lens with your finger- you have oils that will cause it to attract dust/dirt. With a q-tip very lightly soaked in isopropyl rubbing
...remove all the screws and just place the heatsink on top of the chip ,making sure that they are flush down and level . no screws . Power on and if your fan start and stays on , your in luck , now put ...
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