Replacing heatsink on Pentium 4 478

  Quiet Life 14:51 29 Dec 10

I have been cleaning a friends PC and removed the fan and heatsink to clean the heatsink.
The heatsink has a square of silver foil attached to it and the processor has a small black rectangular piece attached to it. There appeared to be some black paste over the lot.
Should I apply heat paste to the heatsink over the silver foil and reapply or should I take off both the foil on the heatsink and the rectangular square on the proceesor and then apply the heat paste? Advice appreciated.

  Fruit Bat /\0/\ 14:59 29 Dec 10
  Quiet Life 15:34 29 Dec 10

My concern was whether to remove the silver foil from the heatsink and the rectangular pad from the processor. These would appear to be part of the original Intel cooler/processor set up.
As part of old system my feeling it to remove but I wanted some expert confirmation.

  Fruit Bat /\0/\ 15:56 29 Dec 10

click here

halfway down page

  Quiet Life 18:05 29 Dec 10

Researched elsewhere and the foil which has heat paste behind it and the pad on the proceesor are part of Intel original instal and should be totally removed before using new paste.
Did this and all seems OK.

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