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26 Posts

10-27-2009

Atlanta

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Re: T400s random shutdowns

2010-01-23, 4:13 AM

Steve - Thanks for your help in keeping this issue alive and providing some organization to the data.

 

Mark - Let me echo the need for a reference number of some sort that will be instantly available to every Lenovo tech support rep and which will specifically state that a motherboard replacement is the correct fix.  Otherwise, endless discussion will be required prior to getting authorization for a motherboard replacement.

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162 Posts

10-21-2009

Netherlands, Hilversum

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Re: T400s random shutdowns

2010-01-23, 9:20 AM

 


wrote:

Steve - Thanks for your help in keeping this issue alive and providing some organization to the data.

 

Mark - Let me echo the need for a reference number of some sort that will be instantly available to every Lenovo tech support rep and which will specifically state that a motherboard replacement is the correct fix.  Otherwise, endless discussion will be required prior to getting authorization for a motherboard replacement.


 

 

And not just a motherboard replacement. But a specific motherboard replacement identified having the fix for this problem. Otherwise you probably get a refurbished motherboard with similar problems.

 

--

jan

--- Lenovo Thinkpad t440p (20AN-CT01WW) + SAMSUNG MZ7TD512HAGM-000L1 SSD + 16G SDRAM + 14.0FHD 1920x1080 ---
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332 Posts

12-01-2009

Czech Republic

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Re: T400s random shutdowns

2010-01-23, 11:33 AM
well after month of no problems, an hour ago a had another random shutdown. Even with new BIOS 1.12. What exaclty should we ask for in service to replace. Should we ask for complete motherboard to be replaced or what exactly?
----------------------------------------------------
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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7 Posts

12-15-2009

Germany

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Re: T400s random shutdowns

2010-01-23, 13:08 PM

Hmm, as I wrote earlier in the thread, my motherboard was replaced last week and the technician also updated the bios to version 1.12, and I had a random shutdown the very next day. Also, since then my processor has been whining and my speaker mute button no longer works (when I reinstall the hotkey software, it seems to work for a while, but the next time I restart, the button is without function again).

Does this mean I got an old motherboard? Do I have to get it replaced again? I can't believe that Lenovo didn't communicate to its service staff that this was a known problem and that a solution was on its way. I would definitely have waited with the replacement until the official response was available.

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9 Posts

10-28-2009

switzerland

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Re: T400s random shutdowns

2010-01-23, 14:08 PM

first time the problem was public: 07-25-2009 01:07

AM, when this thread was created.

 

solved:  01-22-2010 09:37 PM

 

sorry guys but this isn't the proper way to solve such a problem. not for a brand like "lenovo / thinkpad".

 I know it's not the best for the brand / image of lenovo, but it also shouldn't take a half year to solve the sudden shutdown problem...

 

Note from Moderator:  A comment which violated the forum rules was removed.


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10 Posts

01-19-2010

California

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Re: T400s random shutdowns

2010-01-23, 17:55 PM

What is the entry in the event log after the shutdown occurs?  I think this just happened to me.  I closed my laptop to go get a cup of coffee, and when I returned it was not responding.  It came back with the MS window telling me it had stopped, not been shut down properly, etc.  Here is what I have in my event viewer:

 

The system has rebooted without cleanly shutting down first. This error could be caused if the system stopped responding, crashed, or lost power unexpectedly.

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10 Posts

01-19-2010

California

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Re: T400s random shutdowns

2010-01-23, 18:06 PM

Actually there were 2 entries back to back

 

First this:

The previous system shutdown at 8:30:22 AM on ‎1/‎23/‎2010 was unexpected.

 

and then this:

 

The system has rebooted without cleanly shutting down first. This error could be caused if the system stopped responding, crashed, or lost power unexpectedly.

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51 Posts

12-04-2009

USA

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Re: T400s random shutdowns

2010-01-23, 19:53 PM

 


wrote:

Actually there were 2 entries back to back

 

First this:

The previous system shutdown at 8:30:22 AM on ‎1/‎23/‎2010 was unexpected.

 

and then this:

 

The system has rebooted without cleanly shutting down first. This error could be caused if the system stopped responding, crashed, or lost power unexpectedly.


 

Yes, those are event log entries that you would see in case of a random shutdown

 

 

Although, I'm guessing that your shutdown occured during the process of putting the computer to sleep. Sleep problems are more common and could be caused my something else.

 

In the event log details , what does it say for "sleep in progress" and "power button time stamp"?

 

When you came back , was the system on, but not responding (system lights were on) so you restarted it? or was it already off and you just turned it on

 

Whats the built date on your system?

 

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51 Posts

12-04-2009

USA

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Re: T400s random shutdowns

2010-01-24, 6:52 AM

 


wrote:

 

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. 

 

 


 

 

That could explain why I haven't seen any shutdowns since undervolting the CPU.

 

For those of you waiting for new system boards to come in, try undervolting using RMClock

 

@I'm running 1.6 GHZ @.9250 V, and 2.53 @ 1.0750 V (If your using RMclock, u must select IDA 10.0x multipliers to get the top CPU speed).

 

Recently, I throttled the CPU to max at 2.4 GHZ (0.9875 V, 9.0x mutiplier). This has given me the best battery life and minimized heating, with the no real world perfomance decrease.

 

 

 

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63 Posts

10-20-2009

Copenhagen

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Re: T400s random shutdowns

2010-01-24, 23:14 PM

I hope the system board will be replaced free of cost. :-/

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