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21 Posts

10-22-2009

San Diego

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Re: T400s random shutdowns

2009-12-01, 1:56 AM

Well after making the software setting changes to power management that Lenovo customer support recommended, I hadn't had a random shutdown in about a week. That ended today when, while looking at a Firefox browser page, my T400s did its shutdown thing.  I hadn't expected it to work, and unfortunately, it didn't.

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26 Posts

10-27-2009

Atlanta

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Re: T400s random shutdowns

2009-12-01, 15:21 PM

This thread began on July 24th.  It is now December 1st.

 

To my knowledge, Lenovo has been silent with respect to a solution to this problem - a problem which obviously continues to plague T-400s users (it continues to plague me!)

 

I realize technical problems can be difficult to resolve but isn't it time for some answers?

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332 Posts

12-01-2009

Czech Republic

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Re: T400s random shutdowns

2009-12-01, 16:53 PM

I have disabled these 2 options for virtualisation in BIOS, CPU config and from that time i had no random shutdown. I know this is not solution, but may be temporary solution, until Lenovo will (hopefuly) fix it. Or may be random reset will become anyway, will see.

----------------------------------------------------
Lenovo T440s, 20AQ0067MC, Windows 8.1 Pro x64 UEFI, Samsung 840 EVO SSD 250 GB, 8 GB RAM
Lenovo T430s, 2356LQG, Windows 8.1 Pro x64 UEFI, Intel 520 SSD 180 GB, 8 GB RAM
Lenovo T420s, 4171-6SG, Windows 8 Pro x64 UEFI, Intel 320 SSD 120 GB, 8 GB RAM
Lenovo T400s, 2808-CYG, Windows 7 Ultimate x64
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28 Posts

09-28-2009

SoCal, USA

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Re: T400s random shutdowns

2009-12-01, 17:01 PM

I found turning the two options off in the bios helped for a while but it did come back.

 

Haven't had a shutdown in the past week after applying the new bios update, not sure if that fixed it or not, anyone still having the reboot after the bios update?

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64 Posts

09-29-2009

Australia

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Re: T400s random shutdowns

2009-12-01, 22:50 PM

I updated to BIOS v1.11 a couple days ago, no shutdown as of yet, but i'm not convinced they've fixed it. I'm sure it would have been mentioned in the change log if they had.

 

Time will tell I guess...

 

-Steve

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260 Posts

07-03-2009

United States of America

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Re: T400s random shutdowns

2009-12-01, 23:18 PM

 


wrote:

I updated to BIOS v1.11 a couple days ago, no shutdown as of yet, but i'm not convinced they've fixed it. I'm sure it would have been mentioned in the change log if they had.

 

Time will tell I guess...

 

-Steve


 

I bet that Lenovo technicians do not even know the cause(s). If you google "  "windows 7" shutdown ", you will see lots of people experiencing the same problem.

 

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64 Posts

09-29-2009

Australia

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Re: T400s random shutdowns

2009-12-01, 23:48 PM

The thing is, the T400s shutdowns are not just with Windows 7.

 

-Steve

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6 Posts

11-30-2009

Batam, Indonesia

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Re: T400s random shutdowns

2009-12-02, 4:17 AM

Hello there Steve,

 

I'm just new here. My laptop is not a T400 but Y450... just recently bought in Singapore and OS upgraded from Vista to Win7 32bit. Well I just had my 1st random shutdown this morning after i took out the AC and on battery mode only.

 

I believe this problem is not just confined with T400 & Win7.

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260 Posts

07-03-2009

United States of America

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Re: T400s random shutdowns

2009-12-02, 6:04 AM

I don't have shutdowns but just saw this

http://windows7news.com/2009/12/01/windows-7-bsod-black-screen-of-death-freeze-and-potential-fix/

 

This method might help get some diagnostic info:

 

WinKey+Pause, click "Advanced system settings", click "Advanced" Tab, click "Startup and Recovery". Uncheck "automatically restart" and enable "Kernel memory dump".

 

Also, read this http://www.engadget.com/2009/12/01/dell-facing-massive-e6400-and-e6500-overheating-and-underclockin/ ; it won't solve the prob for you but will make you feel much better.

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332 Posts

12-01-2009

Czech Republic

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Re: T400s random shutdowns

2009-12-02, 7:58 AM

Well i think that's different situation. You can use dump, when this random shutdown comes from OS. Then in event log there is a message, dump is generated etc. Problem is, here with this Lenovo random shutdown, there is NO event log message, it looks it's completely out of OS, OS even do not recognize, it has been shut down., That's little bit different.

----------------------------------------------------
Lenovo T440s, 20AQ0067MC, Windows 8.1 Pro x64 UEFI, Samsung 840 EVO SSD 250 GB, 8 GB RAM
Lenovo T430s, 2356LQG, Windows 8.1 Pro x64 UEFI, Intel 520 SSD 180 GB, 8 GB RAM
Lenovo T420s, 4171-6SG, Windows 8 Pro x64 UEFI, Intel 320 SSD 120 GB, 8 GB RAM
Lenovo T400s, 2808-CYG, Windows 7 Ultimate x64
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