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Laptop shuts off while under light workload

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Hello,

For many months now I have had issues with my laptop turning off without notice whenever it is under relatively heavy load (lately, having several internet tabs and Photoshop has been enough). As if somebody pulled out the battery, without any warning or crash message/log.

After it has crashed like this, it does not immediately turn on if I press the power button. Rather, I have to take out the charger (for some reason it won’t properly start while connected) and press the power button a few times over the period of 5-15 minutes or so. Might be that it needs some time to cool off, discharge or whatever, but I usually need to press the button 2-4 times. The power button lights up for a few seconds, then shuts off. After a few times of this, the keyboard will light up, then turn off, turn on, turn off, etc, 2-4 times. Eventually, the computer properly starts and I’m at the login screen.

About the charger issue, I once put the charger back in while the computer was just about to properly start and it suddenly shut down again. Another detail is that every time it turns off like this, the setting for how the function (Fn) key works is changed in the bios (if I have set it to something else). The clock on the computer is also not active while turned off like this (clock falls behind and I have to correct it), meaning the computer is completely off during this time.

I have managed to keep the computer running and playing an intensive game while keeping it upside-down with its underside removed (so fans etc were visible). Despite the CPU and GPU getting somewhat hot (60 °C), it did not crash for the ~30 minutes I had it running. Putting the underside back, setting down the laptop on the desk and playing the game, resulted in it shutting off within 5 minutes.



The issue clearly seems to be hardware related, as the computer suddenly shuts off without any real information log about how it crashed. I believe it to be temperature related due the above test and it lasting extra long after it's been cooled down by cold weather. Given the low CPU & GPU temperatures, it is as if the temperature affects something else within the laptop, a circuit or something. Or maybe damage from previous overheatings? However, at the same time it has crashed at lower temperatures (at least according to the sensors and me touching the heat sink) when using the browser + Photoshop and while trying to run memtest86 (I had not even started any tests yet).

I have looked through not only this forum but plenty others and despite finding some similar issues, not found any solution to my problem. Most similar issues point towards GPU/CPU temperature or PSU issues. I have tried:
  • cleaning out the fans etc. with compressed air
  • putting on new thermal paste on the CPU & GPU
  • turning off the GPU via the NVIDIA control panel (this worked for a few longer Minecraft gaming sessions, but one day stopped working)
  • switching and removing ram sticks (the issue might still be that they are overheating since they’re close to the CPU? or that both ram sticks are faulty?)
  • disconnecting the battery, only using the charger for power
  • undervolt the processor, to make it run cooler

If anybody has any ideas what could be causing this I’d be very grateful for a response. If you have any stress tests etc. that might be useful to pin down the issue I’m all ears for those as well. At this point, I have lost most hope that my laptop can be saved but the alternative is finding the money for a new one. I have been thinking of handing it in to a repair shop, but I don't have any nearby that seem capable enough to sort this out.

In case it’s relevant, here are my laptop specs:
Acer Aspire A715-72G
Intel Core i7 8750H
NVIDIA GeForce GTX 1050Ti mobile
2x8 GB DDR4 RAM (I added a HyperX stick)
512 GB SSD
CFL Charmeleon_CFS Motherboard v 1.19

Cheers
 
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while i can't be 100%, it seems to me to be temperature related.
about the only thing you don;t mention trying is putting the laptop on one of those active cooling stabds, the ones with a fan embedded in it that the laptop sits over, forcing airflow around the unit.
may be worth a shot. :)
 
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while i can't be 100%, it seems to me to be temperature related.
about the only thing you don;t mention trying is putting the laptop on one of those active cooling stabds, the ones with a fan embedded in it that the laptop sits over, forcing airflow around the unit.
may be worth a shot. :)
Thanks for the response :)
I did consider getting one, but since it crashes even when the CPU and GPU is below ~60°C it doesn't treat the core of the problem and I'm not sure it will help when I will play more intense games
 
where are you getting your temp readings from?
BIOS or 3rd party software.
and try more than one if software just to make sure your getting reliable readings.

as to 60 (or below) being OK, it normally is, but it'll depend on what temp the unit is set to trigger a thermal event and the component doing the triggering may not be the CPU or GPU.

suddenly turning off, not being able to be turned back on for a few minutes and working better with the cover off are all classic signs of over heating.

with it upside down and the cover off, when it shuts down next time, put your finger on all the chips and see which one burns you (there'll be a bit of pain for hopefully a lot of gain) :)
 
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I've used HWMonitor, ThrottleStop and SpeedFan, which have showed rather similar temperatures (not sure how to check with the BIOS).

Ah, that's good to know. My "investigation" did point towards it being over heating, but since the CPU never got very hot I was confused about what the problem could be. The laptop used to work fine playing this game before so maybe a component was damaged by a previous over heating... Nowadays I don't even have to do anything special, just watching a video and having many internet tabs open at the same time is enough for it to crash - and the temperatures are much lower, around 40-50°C. However, playing an intensive game it reaches much higher temperatures and doesn't crash if I have it upside-down without the cover. To me, that sounds weird, but maybe I'm missing something

I'm willing to sacrifice a finger or two for my laptop :p I've poked around in the computer after a crash a few times, but I can't really identify anything as extremely warm (except for GPU and CPU). The warmest components are the ones closest to the GPU and CPU, but they're warm enough to permanently alter my fingerprints
 
my threshold of what constitutes something being too high is when i can't leave my finger on the component any more.
if it's too hot that I have too remove my finger, to me, that's too hot - full stop.

any chance it's something else entirely, like the hard drive, or power socket board (for example) that are getting hot and having their heat load go through to over parts?
 
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After playing the intensive game I could only hold my finger for a few seconds before I had to remove it, but after crashing due to watching videos I could hold my finger much longer.

I'll have another look when it inevitably crashes again, but as far as I remember the SSD was warm but not hot, the RAM was rather warm (probably because it's rather close to the CPU) but not hot. All the other components (not too tech-savvy so I'm not sure what the different minor components are called) I touched were normal temperature (again, those closer to CPU & GPU were warmer).
 
you could simulate an active cooling pad condition - flip it off and with the cover off (like you have been), have a fan blowing directly into it, and better still, do all this in an air-con room set to 20-22 degrees.
 
13ET,

You have revisited the forum but not updated your thread, if you no longer require assistance please afford us the courtesy of letting us know so that we can close the thread, thanks.
 
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