Hi I purchased a cheap laptop on ebay, it was an HP DV9000 series. I know they have a common problem where they overheat but I have had good luck with them and I got it for a very low price so I decided to buy it. The seller also noted it had a copper heat sync shim installed to keep it running cooler. The laptop was delivered and I inspected the circuit board and I found that it was not 1 single shim installed but two shims were installed one on top of the other, with heat sync compound in between the two copper shims.
Each copper shim is 0.55 mm thick (1.10 mm with both of them on top of eachother).
My question is would it be better to install these copper shims back (using a good heat sync paste) and should I put the paste in the middle of the two copper shims like it was when I purchased it? Or should I order 1 thicker copper shim (1.1 mm thick)? In other words what is the proper way to do it?