Try this, and read all pages but this will help a lot: HERE
YouTube... I don't agree with everything he says, but you can benefit from viewing this: HERE When he mentions hex head he means Torx.
Noctua thermal compound.... buy it via Amazon. It is the only stuff I use, and it has been very easy to spread into a thin layer. Nonconductive.
Spend some time on YouTube learning about HP processor upgrades.
2.38 is latest and read up on replicated setup..... you need to learn how to capture your current BIOS settings onto a thumb drive first. That clone of BIOS will be a final step.