How do you replace the thermal paste?
I have not seen a tutorial on how to replace the thermal paste, and I don't know how to do it. Can someone give me a hand?
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I have successfully replaced the thermal paste!
I have used this page of the manual to disassemble the heatsink and this tutorial How to Repaste a Laptop to do it.
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I'm not an expert on replacing thermal paste, but I do have a little bit of help to get you started.
First I'm going to disagree with Aadam in that I don't believe you have to remove the motherboard to get to the heat sink. Although iFixit doesn't have a guide that will show you the complete procedure, they do have one showing you how to remove the fan, which is just one step short of where you want to go. So the first thing to do is to follow this guide to the end.
HP 15-da0012dx Fan Replacement - iFixit Repair Guide
From there I'm fairly sure all you have to do is remove the four screws holding the heat sink onto the processor and you have the thermal paste exposed.
At this point I'm at the end of my expertise, so I'm going to stop here and leave the rest as an exercise for the student, or perhaps another of our knowledgeable contributors can chime in to complete these instructions.
Although you should in general be okay with just tightening down the four screws, I know from my time at Intel that when I was replacing a processor on a server board, there were very specific torque settings and tightening sequences required for the heat sinks they used. However, keep in mind these were for huge 64 core Xeon server processors so it's unlikely the requirements for a desktop CPU are anywhere near as stringent. If you can find any documentation about replacing the heat sink it would be worthwhile reading through it to see if there are any particular needs.
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@kenos just follow the instructions provided by @dadibrokeit All that is left, is to use the guide for the How-To. Something like this HP Pavilion 15-ba003ds Thermal Paste Replacement Different model exact same idea and steps. Can't go wrong with that.
I think we are both right
My laptop (see my question) required to remove the motherboard since the heatsink screws were on the underside of the board
My sister's laptop didnt need to remove the entire board, the heatsink was removable from the top
@aadamomar That's a good point. For some reason the service manual doesn't seem to be available any longer on this model, so it's hard to tell which way it's going to turn out. A good design would make it replaceable without having to remove the motherboard, but who knows what evil lurks in the hearts of hardware engineers?
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Sure!
First, confirm you know how to open the laptop without damaging
Second, actually do that
Third, disconnect the battery
Fourth, unscrew every screw connected to motherboard, and unplug anything that will stop the board from coming out, usually the board and fan are attached so unscrew the fan as well
Fifth, take the motherboard and fan assembly, and unscrew the fan from the motherboard
Sixth, remove the old paste and apply some new stuff
Seventh, reassemble the laptop
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Turn off your PC, remove the heatsink, clean old paste with alcohol, apply a pea-sized drop of new thermal paste on the CPU, and reattach the heatsink.
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