Laptop overheats before OS starts

Question

Do it yourself

Hey Habr! A friend's laptop (HP) went crazy, but geographically we are too far apart for me to see the problem with my own eyes, and from the verbal description of the problem, I have no idea what the problem could be.

According to legend, when the computer is turned on (even before the OS is loaded), the overheating protection is activated and the computer is cut down. If you hold it in the cold for a while, then you can wait for Windows to load and see the temperature with the software, which shows a completely normal temperature (around 50 degrees). At the same time, in all cases (even with cold, even without cold), the laptop feels cold to the touch, which hints at a false alarm of protection. There is no dust inside, the thermal paste is fresh.

Answer 1

a) as an option (however, I have never seen it in my life) - depressurization of the heat pipe (perhaps not abruptly, but gradually it emptied)
b) when replacing the thermal paste, the radiator was placed crookedly or something got between the radiator and the copper plate of the radiator *
c) performance mode is enabled in the BIOS (but this is unlikely and still does not explain the chopping off of the laptop)
d) nothing is said about the sound of the fan - it may be buzzing (louder or quieter), but it actually enters into resonance, which is why its speed drops heavily and instead of 2000..2500 rpm it rotates only 400..500 (at the same time it can vibrate and make sounds even more than at 2500) - this happened often and it was with laptops - lubrication with grease or for replacement
* Mnu had such a case - an aluminum crumb from the tube got in and the Athlon 2500+ processor was cut off for protection (the mother of Soltek 75-drv5) almost a couple of seconds after the start.

Answer 2

Just last week, the same situation arose with my brother's HP laptop. Turned on only after cooling by the open window. Later it worked, but at the same time it was on a blower stand, and its own fan thrashed like crazy, but the flow of outgoing air at the slots on the side was not felt at all, instead it felt hot. As the autopsy showed, the reason is simple and banal - the accumulation of dust, which caused the fan to jam. It was decided by almost complete disassembly, cleaning using cotton swabs and a can of compressed air. So with similar symptoms, look for a disassembly manual and clean the fan

Answer 3

The area of ​​the central processor core, which, when overheated and initiates a laptop shutdown, is incomparably small compared to the surface of the laptop, so you do not have time to feel the heat of the case.
What were the symptoms before replacing the thermal interface? It must have been replaced on purpose.

Answer 4

Maybe it's not the temperature, but the battery? Do you include it with it or separately?

Answer 5

Well, I think it's logical to look at the temperature in the BIOS simply.

Answer 6

If the problem is not solved, then you will have to disassemble the laptop again, remove the remnants of the previous thermal paste, replacing it with an unexpired colleague (for example, KPT-8) [hmm. someone might think it's a smiley].
As for the resonating fan, which allegedly runs at 500 rpm. instead of the prescribed 2500, then in the presence of heat pipes and at least some kind of radiator, the central processor must warm up for some time, the time that is spent on warming up the entire heat removal system. As an experiment, use additional cooling. Perhaps it makes sense not to use a regular fan in order to make sure that it is (not-) guilty.

Answer 7

welcome,
I’ll add five kopecks
- make sure there is no external heating, because. so that the laptop does not stand on a soft substrate, for example, a sofa. Air intake and outlet openings must be free. Maybe the user is freezing and the heater is turned on at +30 in the room, and the laptop is next to this heater.
- there was a similar problem, the laptop was disconnected from overheating when installing Windows, even the system did not have time to install. Moving to a cold room only gave extra time. Dust clogged deep inside the radiator, blowing through the vents without removing the cover did not work.
- remove the cover, get to all the radiators, blow it with compressed air (a cylinder is sold), you can wipe it. Clean the fan blades if possible to oil the bearing. Check by hand how the fan turns.
- in general, such service helped me. Now the laptop does not turn off overheating, it heats up noticeably less and works.