[Solved] Dell N5110 Laptop Overheating & Fan Constantly Running: Causes & Solutions (Max 90 chars)

Hello. For a long time I defended myself from registering on the electrode, but I will finally take a chance
As the topic is not closed and archaeologists have dug it up, let me ask a question. I have a grandfather Dell N5110 and from old age it heats up incredibly and at the same time lingers a bit. I change the paste regularly and it doesn't see much dust either. Cooling is also not the worst because you can cook eggs behind the fan, so I think the efficiency is ok (I can be wrong of course, I hope that someone will correct me). Therefore, can anyone suggest what could be the cause of boiling procka and graphics? And what can possibly be done about it? I will add that there were flooding that I later cleaned myself (I'm not an outstanding specialist but I tried my best). I would like to skip the suggestions of changing the laptop for a new one Same with carrying to service, the way back and forth will be more expensive than the patient . Also any ideas would be welcome. Greetings to all readers :)




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Taken from the topic: Laptop fan keeps running, why?
by dt1 on 17 Feb 2023 09:45

Hello. First, I should start with the hardware configuration I guess Windows is tenth, 4Gb RAM, the rest as in the attached picture. The battery is basically dead, although it shows 100% so grandpa is running on the power adapter. When unplugged, it crashes like a landline
If it works, I'll make a new one for it.


This screenshot is taken calmly, without load. And now, turning on anything, e.g. Opera, the load increases to the max, crashes, loads for a good half a minute and then returns to normal.
I changed the power plan to balanced, because the processor was clocked at max, now it changes the frequency smoothly. Unfortunately, when you turn on any game (Minecraft here), everything immediately increases to the max, the fan almost jumps out of the housing and the temperature is still 95-98 degrees.


I am a bit puzzled by the fact that some processes are multiplied on the list several or a dozen times (you can see it well in the "details" tab), such as opera, conhost.exe, svchost.exe (dozens of times) but on the desktop I have similar, so maybe it has to be.
One more thing. Yesterday I also did a quick diagnosis on the Dell website and here's what came out:


While the battery is dead and counterfeit and the fan in the next full test was ok, I'm wondering about the PCI bus error.
Regards.

Looking at the temperatures and the size of the load at a given moment, the cooling system is clearly not working. The temperature rises, the processor slows down, protecting it from complete destruction, hence the hangs probably.
If, as you wrote, you change the paste regularly and the fan runs at high speed, there is still insufficient contact between the processor and the heat sink / cooling system.

On the other hand, the temperature emitted is supposedly high, if the discharge was weak, summer air would blow.

Actually, you may be right, so it depends on how subjectively high the air temperature is. Just recently I had the problem described here in my laptop after replacing the processor, fortunately I managed to solve it. During the load tests, of course, I checked by touch how hot the air that blows the fan is. According to the processor sensors, at 100% full load of 4 cores (after 3 minutes), after applying the -100mV offset, the temperature reached 88 degrees and the air was very warm, but not hot so that I couldn't hold my hand. So I guess it's a subjective thing. Maybe the author can help.

The method of applying the hand is very warm, but does not burn. I agree that it may be subjective. Later, I will open it and measure the temperatures at the entrance and exit.

crux wrote:

Looking at the temperatures and the size of the load at a given moment, the cooling system is clearly not working. The temperature rises, the processor slows down, protecting it from complete destruction, hence the hangs probably.
If, as you wrote, you change the paste regularly and the fan runs at high speed, there is still insufficient contact between the processor and the heat sink / cooling system.

Looks like you're right. I measured the temperatures on the heat pipe at the processor and at the fan outlet. They are basically the same. But as the hw monitor shows 80 degrees on the processor, the meters on the heat pipe and fan show max 45. So you probably have to take care of putting the paste on correctly
Thanks .

Maniutek2233 wrote:

Looks like you're right. I measured the temperatures on the heat pipe at the processor and at the fan outlet. They are basically the same. But as the hw monitor shows 80 degrees on the processor, the meters on the heat pipe and fan show max 45. So you probably have to take care of putting the paste on correctly
Thanks .

>>> HERE you have a CPU temperature test depending on how the paste is applied, too little paste and with no paste at all. The last two cases, of course, with significant temperature increases. Also check that the pressure of the cooling system is correct. Good luck