Originally Posted by GitarGr8
But I rebooted and now it's doing the same thing. Any ideas? Should I try to get a new thermal pad? The heatsink looks like trash, not even close to mirrored, and I could TRY to lap it. Anything may help at this point, so I'm all ears.
- Gently clean the CPU die and the surrounding organic substrate.
- Apply a thin and even layer of thermal paste to the cpu die.
- Clean the heat sink and even lightly sand it with 600 grit sandpaper until it shows a clean surface devoid of any ridges. Run your nail over the contact surface to confirm the existence of these surface (machining) ridges.
- DO NOT apply thermal past to the heat sink.
- Now gently place the heatsing over the CPU die and evenly screw it in the manner outlined in the heatsink label.
- Wait a little and DO NOT turn on the computer.
- Now unscrew the heat sink in the proper reverse order.
- Gently and CAREFULLY lift the heat sink and look at the bottom side of the heat sink.
What do you see? If you see that the CPU core left an even rectangular print then ALL IS OK with your cooling solution.
If you don't see a perfect contact then you need a thin copper spacer to sandwich between the core and the heat sink. An alternative is to get a suitable replacement heat sink.