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guywithalaptop
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Registered: ‎02-08-2017
Location: US
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Message 1 of 7

t440p constantly overheats and shuts down, temps reach 90 celsius

 Let me start out by saysing that this is my second time making this thread. The first time the laptop overheated and shut down before I finished. Yes, its that bad.

 

So, my t440p with a core i7 4600m and a GT 730m graphics card has been overheating constantly. I can't even browse the web without it shutting down. Temps on both the cpu and graphics chip reach 90 degrees celsius or more frequently.

 

Any suggestions on whats wrong with the laptop?

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Message 2 of 7

Re: t440p constantly overheats and shuts down, temps reach 90 celsius

I guess it will be time to replace the thermal compound. This will require a little disassembly but is doable, specially if you follow Lenovo's Hardware Maintenance Manual steps: click me! (See chapter 9 - 1090)

 

You will also need to clean up the old paste from the CPU and fan, use 100% alcohol or isopropyl to do that. Then buy a good quality thermal paste like Thermal Grizzly Kryonaut or Artic Cooling MX2. Apply a very small amount of paste and distribute it evenly thru the CPU die so that you end with a very thin layer of paste.

 

There a Lenovo video you can also check here Smiley Happy

 

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guywithalaptop
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Message 3 of 7

Re: t440p constantly overheats and shuts down, temps reach 90 celsius

Thanks for the info. I have some cheap insignia thermal paste, do you think that will be good enough for a few days until my new thermal paste is delivered?

 

Also, the laptop randomly shuting off might be independent from the heating issue. Even when the CPU has 1-2% load and the fan isn't even on it still shuts off. In the system log it shows "kernal power" as the reason for the shut down. Any idea why this is happening?

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Message 4 of 7

Re: t440p constantly overheats and shuts down, temps reach 90 celsius


@guywithalaptop wrote:

Thanks for the info. I have some cheap insignia thermal paste, do you think that will be good enough for a few days until my new thermal paste is delivered?


You're welcome! Unfortunately I don't know that brand... :-(   But in case the current paste has dried it could be worth trying.

 


@guywithalaptop wrote:

In the system log it shows "kernal power" as the reason for the shut down. Any idea why this is happening?


This doesn't ring a bell. Which OS are you using? Try booting a Linux Distro from a USB-drive ir CD/DVD and see if the T440p also shuts down.

 

-

 

 

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guywithalaptop
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Message 5 of 7

Re: t440p constantly overheats and shuts down, temps reach 90 celsius

I'm running windows 10 pro. I had a different t440p with a lower end i5 4300m and no deticated graphics that my current t440p was meant to replace. When I transfered the hard drive from the old laptop to the new one I left everything on it. I might be having issues because I didn't do a fresh install.

 

I'll put ubuntu on a flashdrive and try it.

guywithalaptop
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Message 6 of 7

Re: t440p constantly overheats and shuts down, temps reach 90 celsius

I tried ubuntu and the laptop still shuts itsself off. Temps never got hot in ubuntu. I'm going to try new thermal paste, hopefully that will help.

guywithalaptop
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Message 7 of 7

Re: t440p constantly overheats and shuts down, temps reach 90 celsius

Well, I re-applied the thermal paste and the overheating issues are gone. The laptop runs about 10 degrees cooler.

 

But unfortunately the laptop still shuts off. I noticed that it powers down every thiry minutes down to the second, regardless of wether I'm in windows, the bios, or some other OS loaded from a flash drive. It must be sume kind off hard ware or bios related issue. I'm going to start a new thread on the shutdown problem.

 

Thank you for your help.

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