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Go into the BIOS and turn off all the wake on LAN options for the NIC, the advanced power options for the processor and motherboard, and the Intel AMT remote management chip."

 

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So what do you do if you need these features?? Sounds like a bandaid solution to me...

I sure hope Lenovo have fixed these problems in the T410s!

What are the steps one takes to go into BIOS and make these changes?

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Go into the BIOS and turn off all the wake on LAN options for the NIC, the advanced power options for the processor and motherboard, and the Intel AMT remote management chip."

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I've just encountered a shutdown having the wake on LAN and Intel AMT options disabled in BIOS.

I've been free of shutdowns since Dec 4th, after downgrading to intel video driver 1892. I've had AMT and wake on lan disable since the first day that I got the machine. I've been running BIOS 1.12 since the first day it came out.

All,

Update - I'm editing this post to be the official solution, since it is the point in the discussion where we declared this to be a hardware defect that could occur in a percentage of the early vintage T400s systems.  Discussion continued after this post as we updated stocks and cascaded communication about this issue through all service channels. 

For the past several months, with the help and valuable input of everyone on this thread, we have been working to find the underlying common cause of these random power off events experienced by a subset of our T400s customer base.

We have determined that an internal noise issue with the voltage regulation component is the common element.  This is an electrical noise issue which manifests in a fairly small portion of the use base and does not appear to develop over time. 

As discussed at length here, some combinations of BIOS level, system settings, and driver versions can affect the frequency in which these random shut down events can occur, but these factors are not the cause themselves.

Component changes were made during the late November / early December builds and systems manufactured after this period should not be affected.  Updated service parts will be in stock shortly, are now available and if you are experiencing these random shutdown issues, we recommend that you seek service to have the system board replaced.  Uplevel service parts will bear 60Y and 63Y part numbers.

I would also encourage everyone with an existing T400s to update to the new version 1.12 bios regardless of whether or not they have experienced a shutdown issue in the past. 

A sincere thanks to UberSteve and others who have helped to organize the information and keep the discussion on track as many combinations were tried out. 

Best regards,

Mark

Excellent news Mark.. And thank you!

Is there a specific trouble code or service request number we can specify when calling support so they can know what the issue is, and know which specific part requires replacement?

MANY THANKS. MARK!

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Excellent news Mark.. And thank you!

 

Is there a specific trouble code or service request number we can specify when calling support so they can know what the issue is, and know which specific part requires replacement?

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I have the same question? Is there some reference code we can use?

Thanks, Jan

This is great news! Thanks for the update Mark!

Unfortunately for me, it's too little too late. My replacement T400s eventually arrived a couple weeks ago, but I sold it almost immediately. My Lenovo Customer Care rep. wasn't able to confirm if the problem had been identified/fixed, and since I was still reading about new cases (on recently built machines), I couldn't take the risk that the replacement machine might also have the problem.

I've since gone back to my trusty T61p, and am awaiting the T410s to come back in stock.

I too would like to thank everyone who contributed to the spreadsheet, it sounds like it helped! I'm going to take it down now, if anyone needs a copy, please PM me.

-Steve