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scaryninja
Paper Tape
Posts: 8
Registered: ‎12-27-2012
Location: Romania
Views: 303
Message 11 of 18

Re: Lenovo T400s problems after cleaning

It boots the same on both power and battery, it makes no difference, the laptop turns off after approximately 10 seconds.

I will open the laptop once again and check for the connected items to make sure everything is alright.

The only thing I can't understand is why is the laptop turning off so quick after resetting BIOS and the CMOS.
tripplec
Bit Torrent
Posts: 2,379
Registered: ‎03-08-2012
Location: CA
Views: 298
Message 12 of 18

Re: Lenovo T400s problems after cleaning

Have you tried to get into the BIOS. That screen should come up with a few seconds.
T520 Model 4239 Intel(R) Core(TM) i7-2860QMbr>; Nvidia NVS 4200M Win 10 64bit
Z70-80 I7 - 5500U 16GB GB - 1TB HD Win 10 64bit FHD 17.3", G840 w/2GB

scaryninja
Paper Tape
Posts: 8
Registered: ‎12-27-2012
Location: Romania
Views: 294
Message 13 of 18

Re: Lenovo T400s problems after cleaning

I do manage to get in BIOS, but it turns off before I manage to change anything.
Community SeniorMod
Community SeniorMod
Posts: 9,670
Registered: ‎01-01-2010
Location: US
Views: 290
Message 14 of 18

Re: Lenovo T400s problems after cleaning

It really sounds like the fan isn't seated correctly or that you didn't use thermal paste. It is easy to get a wire wrong and put it in so the heat sink doesn't make good contact.  If the heat sink doesn't make good contact or if there is no thermal paste, it will certainly shut off in 10 seconds.


Rich


I do not respond to requests for private, one-on-one help. Your questions should be posted in the appropriate forum where they may help others as well.

If a response answers your question, please mark it as the accepted solution.

I am not an employee or agent of Lenovo.
scaryninja
Paper Tape
Posts: 8
Registered: ‎12-27-2012
Location: Romania
Views: 285
Message 15 of 18

Re: Lenovo T400s problems after cleaning

So do you think it would turn off just because the fan isn't seated correctly? Could you please detail this a little bit? And no, I didn't use thermal paste, but if this is the problem, I can do this in a few hours.

But why does it turn off all by itself?
Community SeniorMod
Community SeniorMod
Posts: 9,670
Registered: ‎01-01-2010
Location: US
Views: 278
Message 16 of 18

Re: Lenovo T400s problems after cleaning

The thermal paste is what conducts the heat away from the CPU die onto the heat sink. If the CPU gets up to 100C it IMMEDIATELY shuts off. It will get up to that temperature very quickly, like in a couple of seconds

Rich


I do not respond to requests for private, one-on-one help. Your questions should be posted in the appropriate forum where they may help others as well.

If a response answers your question, please mark it as the accepted solution.

I am not an employee or agent of Lenovo.
scaryninja
Paper Tape
Posts: 8
Registered: ‎12-27-2012
Location: Romania
Views: 247
Message 17 of 18

Re: Lenovo T400s problems after cleaning

Thanks guys, I've used some thermal paste and checked every connection and everything works fine now.

It stays at approximately 45 degrees Celsius in idle mode, is that ok?
tripplec
Bit Torrent
Posts: 2,379
Registered: ‎03-08-2012
Location: CA
Views: 244
Message 18 of 18

Re: Lenovo T400s problems after cleaning

Very good, well done. I guess you first pass inside caused the heatsink to seperate or something. Anyway you're good now.

 

FYI - I run Core Temp CPU monitoring on both my notebooks. I have it displaying the temperature of two cores on my older system and 1 core on the ThinkPad as well as CPU load. I can see at a glance what is going on. You'll find it here if you're interested in observing it.

 

http://www.alcpu.com/CoreTemp/

T520 Model 4239 Intel(R) Core(TM) i7-2860QMbr>; Nvidia NVS 4200M Win 10 64bit
Z70-80 I7 - 5500U 16GB GB - 1TB HD Win 10 64bit FHD 17.3", G840 w/2GB

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