Originally posted by dussdave
No i didn't replace it under the chips.
because that is imposible.
that is where those balls perched
KAOS is right, it's not impossible. He means remove the IHS (Internal Heat Spreaders.)
The metal plates you see aren't actually part of the chips, they are just sheets of metal pressed on top of each of the chips to disperse the heat across a wider area. There are videos online on how to remove them, however it can be a little tricky. You may need a heat gun to loosen the dried up paste underneath.