Lenovo T420 Unexpected Sudden Shutdown Issue

I have more than 20 laptops in my organization with Windows 7 Enterprise Edition (32 Bit operating system) & i got a very strange same issue in all laptops. Lenovo T420 Shutdown automatically while on working. It doesn`t matter its on battery or AC Power. Kindly help me to resolve this issue if there is some type of patch or hardware changes required.
Many Thanks for your Support.
Waiting for your prompt response.

Me too..
T420, 4328 AA7, Windows 7 Pro.
Monitor suddenly black, there is a red line on the left side of the monitor. Then the laptop shutdown.
Laptop motherboard has already been changed by IBM technicians, but the problem persists.
BRs Nahar

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Debugging sudden shutdown issues

My laptop is experiencing sudden shutdowns, the whole system just goes black. It happened both on battery and while plugged-in. This didn't occur under Ubuntu and I am not doing CPU-intensive stuff when it happens so it is unrelated to heat problems. I'd say it is most likely a software issue.
I am running Archlinux x86_64 with Cinnamon 2.2.3-3, display manager is lightdm 1.10.0-2. The laptop is an ASUS Zenbook UX31-E.
I am looking for ideas to solve this problem. I have installed laptop-mode-tools to save power, perhaps it is at cause.
I checked journalctl, lightdm.log.old and Xorg.0.log.old without any hint of problem.
Any ideas?

Hi
Check these threads
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Sudden shutdowns at a specific time

I have a Dual-Core 2x2.66 Mac Pro that has a strange sudden shutdown issue. I don't have any mixed RAM or anything like that. Nor do I have an PCI cards for expansion. The Mac just has a couple of Apple SATA drives internally and a few FireWire drives on it's ports.
I did a search but didn't find anything that duplicates my problem.
Basically the Mac does a sudden shutdown and reboot every so often with varying frequency (sometimes several times a week, sometimes once a week).
The odd things is that other than a rare exception, it always occurs at a specific time of day (8:41 am to be exact).
My first thought was that perhaps I have some software that is running an automatic, prescheduled function at that time and that is causing the problem. But a review of the software I have installed that I know does this type of thing reveals no prescheduled activities at this time. I have even tried to watch my Activity Monitor at that time and of course the times that I do so, the shutdown doesn't occur.
It seems to me it maybe software/system related, but I hesitate to go all out and wipe my system and reinstall everything because of the sheer number of Apps I have loaded (I do graphics and video work so I am running full suites of Apple and Adobe stuff as well as a bunch of other stuff).
I would certainly do so if I were sure that were the problem, but I don't want to do that if it isn't going to resolve anything?
I had a similar issue with an iMac, but that was not time of day dependent and occurred far more frequently - AppleCare replaced the power supply.
Any thoughts on the cause?
Thanks

As a test try deleting the /Library/Preferences/SystemConfiguration/com.apple.PowerManagement.plist file. You might also try booting into safe mode to see if that makes a difference. Also creating a new user account and logging into that account (log out of your normal account) may also be useful in troubleshooting this.

Issues with lenovo t420s

I have three issues with my lenovo t420s, they might be related but I'm just not smart enough to fix them.
1:By default the bios is set to using optimus, and if I leave it at that x starts up all right but I don't think it is using the discrete graphics card at all? If I change the bios to use discrete graphics X fails with message "no screen found". I have seen this is an issue with optimus-laptops but I have also seen reports of getting it to boot of the discrete graphics card. So my question is simply, should it be possible to boot it of the discrete graphics card? (I have tried using both nouveau and proprietary drivers).
2: It doesn't see my display port connection. Running xrandr just shows LVDS and VGA connection, shouldn't the display port show up as well? On a side note up unitl yesterday xrandr responded with LVDS1 and VGA1, but after updating to 3.2 kernel it now responds with LVDS2 and VGA2?
3: Sometimes when I boot it thinks the vga is connected and boots with the wrong resolution. Running xrandr VGA says connected even though no cable is connected, running xrandr --output VGA1 --off --output LVDS1 --auto (or VGA2 and LVDS2 as of yesterday) fixes the issue.
Regards

Hello OMGitsUGOD,
i run into the same problems with my t420s, at least problems 2 and 3. I did not try to use optimus or discrete graphics settings in BIOS. I think there is something in the wiki about this, maybe you should take a look at that? https://wiki.archlinux.org/index.php/Le … IA-Optimus

Ultrabay battery won't switch to main battery and results in sudden shutdown.

Hi,
I just changed my windows 7 32 bit to 64 but version. The power manager version is 3.66 and driver version 1.64, bios version is LENOVO 7UET93WW (3.23 , 12/15/2011). The ultrabay battery drains to zero and won't switch to main battery, which leads to a sudden shutdown without any warning. In windows 7 32 bit version, I don't have such problem. It's annoying. My computer is T400 7147 CTO.
Thanks!
chicagot400

Hi I have the exact same problem. I have a T400 2764 CTO. Changes I have recently made (past 2 weeks): I upgraded to Windows 7 64, added a PC Card media reader, added an express card USB 3.0, a Samsung 256 GB SSD and the Ultra Bay Battery. Everything was working great... both batteries recognized, ran Lenovo Update... Have everything...
Well the battery meter recognizes both batteries (a 4-cell and a 3-cell), combines their life, but it drains the 3-cell first to ZERO... and isn't bright enough to figure out how to switch before abruptly dropping power to the system.
Hopefully like the ATI switchable graphics that had bugs for ages this battery issue eventually gets fixed. Let me know if you figure out any solution. AND LENOVO, if you are reading, try and set it up so that the 2 battery usage maximizes the life of both batteries with whatever controller you put together.
Thanks.
- Tom

Sudden Shutdown - X200

I am running Windows 7 on my X200. Just recently I have experienced a new issue with it - it suddenlty shuts down for no reason. I don't mean gracefully, but as if you pulled the battery and disconnected the power. It has done it while running on battery and while plugged into AC. Frequency so far is just a couple of times over the last week or so, and twice in the last couple of days. Anyone have any ideas at what I could look at to check this? Thanks.

I ordered the X200 with Windows 7, online from Lenovo on Dec 9, 2009. Received it on Dec 24, 2009 evening. I understand exactly what you mean, sudden shutdown with no reason. The cursor/ mouse was frozen and shut down suddenly. I have to reboot this new machine all the time. I called the tech support the day I received. I was told to send it back to fix. I have to wait for the box, so I can ship it for repair. I tried to call local warrantee service providers. They said it takes time to just look into it and takes time to get parts. I waited until Dec 28, 2000 to called the tech support again (it was holiday weekend). The support tried to help, telling me to run the recovery. After the recovery was run, same result. It keeps shutting down. I was told that if I send it back it will take 2 weeks to return to me. So, it will be 4 weeks before I get a working laptop, if when it comes back and works. So, I decided to return. I was told that they will charge me the restocking fee for this non working laptop. I spoke to the supervisor. He investigated the case that I called. He agreed to give me full refund to return it. I have to see whether I actually received the full refund. I will update whether I get full refund.
It took at least 30 min wait time for each call.

Sudden shutdown when working on battery mode, clock reset

Hi
i am running windows 7 32 bit on an HP dv6970ej (dv6000) and my problem is sudden power failures when working on battery.
my first battery was worn out a few months ago and so I replaced it (with an HP original). it worked fine for a while but lately when I am working on battery mode the system shuts down with no warning.
the thing is that when I plug it back to the AC the battery is almost full - 85%-90% charged.
also - the last few times the power went down the clock was reset. i replaced the BIOS little battery but that didn't seem to make much difference.
i also tried to update the BIOS, didn't change anything.
the main issue of course is the system shutting down unexpectedly, while the battery is obviously still holding charge.
any suggestions?

the clock reset is just a side effect of the main issue - system power failure. as long as there are no sudden shutdowns the clock is saved. plus i guess i am not gonna replace the whole motherboard so that's why i am less concerned about that.
what really bugs me is not having the ability to disconnect the computer from the AC for more that a few minutes. sometimes it shuts down after two minutes, sometimes after 10-15 min.
i am thinking- maybe it has anything to do with voltage drops or something like that or incorrect reading of the battery, because as i said - when i plug it back in - in indicates 80%-90% charge level.
I also ran a diagnostic on the battery's wear level. the old battery was definitely worn out, but the current one seems to be OK on that aspect.

Mid 2010 Macbook Pro 13" sudden shutdown with no errors

I have a mid 2010 Macbook Pro 13" 2.66 GHz with 2x4GB of Crucial RAM, the original 320GB HDD and running OS X 10.10.1; however, this problem has already been bugging me back when I had Mavericks. For about a year and a half now my laptop would suddenly shutdown with a click sound. It first only did it about once every couple of weeks but now it'll sometimes do it within five minutes of turning it on. Sometimes it'll last a couple hours, and other times it'll last 5 seconds. It's not temperature related, because it'll do it whether it has just been turned on or been on for over an hour. I reset the PRAM and SMC, but that didn't fix it. I ran tests with Disk Utility and it said there were some issues with the disk. Disk Utility wasn't able to do it, so I repaired it with fsck in Single User Mode. I thought this was finally going to work, but within 15 minutes it shut down again. Finally I ran the Apple Hardware Test and put it through the extensive test. After it was done running, it said that everything was ok. So according to that there should be nothing wrong with the internal hardware. I would check in the console logs, and it would give me -2 and -60 for "Previous shutdown cause: ". At this point I have no idea what could be causing the problems.

I took it in to the Genius Bar over the weekend, and they ran their tests on it. It passed with flying colors; including the battery, which is doing quite well for its age. So with that being said, they said that the problem is probably with the logic board since everything else came back ok. At this point, I am better off investing in a new computer since a new logic board goes for $400 without labor, and that is if the problem really is only with the logic board since that was their best guess, not definitive.

Random, Sudden Shutdowns - A redux and other things to rule out first

Do a google search for "macbook random shutdown" and you'll find many people with similar problems reporting on various forums. At present, this issue has not been picked up by the mainstream PC news media. However, one should also note that only a fraction of those with problems are suffering this particular fault. A large number of other reasons must be ruled out before a MacBook owner should become convinced their machine is one which suffers this problem. Bad RAM, poorly seated RAM, improperly installed hard drive, corrupted OS, corrupted plists, bad batteries, bad chargers, corrupted PMU, and corrupted NVRAM all need to be ruled out first!
My own MacBook suffered the random sudden shutdown malady and eventually required complete replacement after a logic board replacement did not solve the issue. Some of the MacBooks appear to have a hardware problem which surfaces after a period of use. Many reported their problems starting after a month of ownership. Coincidentally, that also coincided with the release of 10.4.7, but most likely that is not at the root of the sudden, random, shutdown problem.
(However, 10.4.7 is strongly implicated in a separate MacBook problem - colored vertical lines during boot on some machines. That is probably a separate issue.)
Description of the Random, Sudden Shutdown Problem
MacBook suddenly shuts off to a completely powered down state seemingly at random. There are no kernel panic, mouse freezing, or other premonitory symptoms. The machine simply powers down suddenly. The screen goes black. The hard drive spins down and no sleep light illuminates. The machine simply turns itself off.
The shutdowns may occur on either battery or with AC adapter attached. Some owners report their MacBook is less prone to sudden shut down while on battery vs AC adapter. My own afflicted MacBook would suddenly shutdown on a fully charged battery or on either of two AC adapters.
The shutdowns occur with either 10.4.6 or 10.4.7 OS loaded. I went through several cycles of clean installs of the base 10.4.6 and the Intel Combo update to 10.4.7 before it became clear that it mattered not which OS was running. Another indicator that this is not an OS issue is that sudden shutdowns can occur in target mode and also when running just the Apple Hardware Test - which relies on minimal software to operate.
The shutdowns tend to grow more frequent once they begin. They may worsen to the point that a machine will not complete boot up before shutting down. It may take several power up presses to start the machine. Oddly enough, a machine that had difficulty starting up, may be easy to start up several minutes later. It may run for hours or minutes before another sudden shutdown. The frequency is low and random enough that is very difficult to demonstrate this fault to a service technician.
Some users are able to induce a sudden shutdown by running their CPU's at high load and thus heating up the machine. This is easily done by running the yes command in two Terminal windows. Some users report their MacBook is more prone to sudden shutdowns when their CPU is relatively cool. The bipolar reporting is confusing. There may be more than one type of sudden shutdown being reported. One due to CPU overheating and another due to another hardware problem which has yet to be elucidated.
Resetting of the PMU and PRAM MAY temporarily reduce the frequency of the sudden shutdowns, but the effect is temporary. Indeed, the effect may not even be real given the randomness of the shutdowns. None-the-less, one must perform PMU and PRAM resets to ensure that some corruption of those devices is not creating a reason for shutdowns. On my own MacBook, resetting PMU and PRAM (four chimes) did not prevent the random sudden shutdowns.
The sudden shutdowns occur with well seated stock RAM, replacement RAM, and reseated/replaced hard drives. Swapping out and testing both RAM and hard drive helps to eliminate those as the source of the problem. On my own machine, I exchanged the RAM and the hard drive to eliminate them as the cause. This made it considerably easier for the Apple genius to decide it was an internal problem.
In my case, a logic board replacement did indeed solve the fault, but several days later, sudden shutdowns began again. Presumably either the replacement board has the same weakness as the original or some other component of the machine was the actual reason for the sudden shutdowns. The former is quite likely because the machine was made stable for several days with a new logic board. At that point, I requested to be swapped to a new machine and the Apple Store manager wisely decided to help out his customer. For that I am most grateful. However, it is unlikely that the majority of people will have their machines swapped out, but instead repaired.
At this time, no official statement regarding cause for or acknowledgment of the MacBook's sudden random shutdown problem has been made. Because the underlying cause has not been revealed, it is impossible to know that a logic board replacement will permanently solve the problem or merely result in the same fault recurring later on the replacement board. Of course, we do not know if it actually is a logic board flaw.
My advice to MacBook owners whose machines develop the sudden random shutdown symptoms are to...
1. Get your data backed up immediately. The machine will likely suffer more and more frequent shutdown events.
2. Revert to stock RAM and hard drive if you have installed after-market replacements. You must do this and see if the shutdowns continue to occur. Otherwise, the first thing blamed will be your RAM and hard drive.
3a. Perform a PMU reset, by shutting down the MacBook. Removing the battery. Disconnect the AC Adapter. Then, press the power button for five seconds. The reinstall the battery and mains adapter. Restart the machine.
3b. Reset PRAM by holding option-command-P-R keys down during startup until you hear the chime at least three or four times.
Resetting the PMU and PRAM are standard procedures you'll otherwise be asked to perform to diagnose your machine.
4. Do a CLEAN install of the OSX if you wish to totally eliminate a bad OS install as the problem. This will destroy all your data. Alternatively, an archive and install will be helpful without totally destroying your data, but that will not let you exonerate your system files and settings. An alternative is to run Apple's hardware test utility which is found on your OS installation disc. However, an extended hardware test is needed because the shutdown flaw may take hours to surface.
Note: If your MacBook has become so "narcoleptic" that it cannot even complete a boot up sequence, try holding the power button down until you hear a loud beep. That may allow an otherwise balky machine to start.
Once you have done the above, and are still seeing random sudden shutdowns, you have largely done the preliminary footwork that you'll need to prove whether your MacBook has this particular problem and not something more common. Then, call AppleCare or visit your Apple Genius to have the machine repaired or replaced. Hopefully, the root cause of this problem will be discovered, disclosed, repaired and prevented. For now, it appears only a fraction of the MacBooks are suffering this fault, but the machine population is still young. Overall, the MacBook is perhaps the finest laptop I've bought from Apple. It will be nice to trust the machine to not lose my work.
BTW - resetting PMU may induce a separate 10.4.7 related bug which results in your MacBook exhibiting a white screen with progressively more numerous vertical color lines during startup. This appears to be fixable by resetting PRAM and then temporarily changing display resolution to something other than the current setting and then back.

thanks for the comprehensive info. i experienced this for the first time today. i bought my macbook the day they were released. the shutdown happenned for me after leaving my computer on overnight with no programs running. about two minutes into web browsing it shutdown. it then shutdown in the middle of restarts. i disattached power cord, external hard drive, dvd burner & ethernet & it powered up and has been working for about 20 minutes since.
this computer has really been a lemon. first my superdrive scratches the **** (just previewed this, i can't believe they sensor the h_ word?) out of discs, then the trackpad button becomes very hard to push. i've been working around those issues using an external dvd burner and mouse, but not sure how to work around sudden shutdowns. i haven't been able to send it in for repairs yet since i bought it cause i needed it's dvd authoring capabilities for a class i was taking, plus i wanted to make sure nothing else went wrong (self fulfilling prophecy?). i was planning on taking it on vacation with me, but guess i better pack my old ibook too (which other than a cd burner which sucked from the start, has been very reliable). i'll send in my macbook when i get back.
anyway, thanks for the info & advice! i'll back up my crucial data now.
white macbook, 2GHz, 1GB ram (factory installed) Mac OS X (10.4.7)
macbook Mac OS X (10.4.6)
macbook Mac OS X (10.4.6)

Sudden Shutdown of iMacs with 16GB of RAM

An ongoing discussion of iMac shutdowns over at Apple Discussion has prompted me to try to get some answers to this issue that we too are seeing in one of our i5 iMacs with 16GB of 3rd Party RAM.
http://discussions.apple.com/messageview.jspa?messageID=13311466&stqc=true
Recently we found that the issue could be repeated when transforming a layer in Photoshop CS5. Dragging the image around, resizing it a few times will consistently cause a sudden shutdown of the machine. Not a standard shutdown or kernel panic, but an instant off to black screen. The machine will boot right back up with no problem.
Further, we also found that this would occur when the Photoshop tile cache size was set to 128k. Setting it up to 1024k seemed to get rid of the issue and we were never able to recreate the issue when set to 1024k tile cache.
Now I would think to blame Photoshop, but it happened in CS4 and CS5. It also has happened in other apps as well. It just so happens that Photoshop
is doing something that exacerbates the issue and triggers it.
Now, my question is this. And it is rather technical in nature, so if any Adobe techs are reading this, I would love your take on it.
I'd like to know what is going on in terms of data exchange between, RAM, video card or swap space when an image is being transformed.
Does the change in the tile cache size change how large the chunks of data are that are cached to the video card as well?
I'm wondering what the change in tile cache size could possibly be changing that could alleviate this issue.
There are also a number of reports that say removing 4 or 8 GB to leave 12GB or 8GB configs alleviates this issue as well. Do machines with smaller RAM configs exchange data in different size blocks?
I hope this all makes sense. Any info would be appreciated.
Scott

Not a standard shutdown or kernel panic, but an instant off to black screen.
That means that you have a hardware problem, probably in the RAM, but possibly in the motherboard. (having inadequate power supply to the RAM is a common problem that causes this - could be a bad capacitor, or a bad design)
An Apple technician should be able to put a scope on the power and signal pins of the RAM and see the problem happen (looking for a capacitive discharge pattern in the signals, dropping below signal threshold).
Changing the tile and cache size just changes the RAM access pattern slightly, but doesn't affect GPU usage much.
Yes, Photoshop moves a lot of data in and out of RAM with highly optimized code - which tends to expose problems with the hardware sooner than other applications.

Where to Get Lenovo T420 Parts?

I need a 04W1640 (rubber rails for 7.0mm hard drive in 9.5mm bay) for my Lenovo T420.
I called the number listed for parts on the Lenovo website, and they said they didn't sell that part (they sell others, but not that one).
What is the best place to get that sort of thing? This question is especially applicable because my computer is aging and parts will get harder to find as time goes by ...
Solved!
Go to Solution.

Hi,
Welcome to Lenovo Community Forums!
You can try searching for the part with FRU number in eBay, amazon or IBM maintenance parts.
Alternatively, refer the below links and see if it helps.
http://www.newmodeus.com/shop/index.php?main_page=product_info&products_id=411
http://www.thinkpad-parts.com/04W1640-Thinkpad.html
Best regards,
Mithun.
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Satellite L855-10P - Sudden shutdown playing 3D games

Hello,
When trying to play 3D games, after more or less time playing, often less than 10 minutes, my Satellite will suddenly shutdown. Afterwards, it can't be booted up again before some time.
This sort of symptom is generally due to overheat, a common problem with Satellite laptop (and by the way, this is probably the last Toshiba I buy since they can't seem to get that fixed).
The usual solution is to remove dust from inside the laptop, for example with a gentle vacuum cleaner.
It is impossible to do correctly without opening (and voiding the warranty) since they didn't put an access to the fan and heatsink, put can help once in a while.
On this model however, the exhaust is block by a grid (part of the heat sink I suppose, which makes sense) and on the intake, the fan is blocked so that it can't turn in the opposite direction, meaning it is almost impossible to s*ck the dust. Result: almost impossible to remove dust. Well played.
So normally I would send my laptop back for "repair" (which is just opening the thing to remove the dust and maybe redo the thermal paste, but you can't do that yourself of course), but in this case I noticed it shutdown really quick.
I can leave it on a 2D game or old low quality 3D games (say Supreme Commander in low quality mode) for hours without problem, even in hot weather, but as soon as I try a newer game (for example Resident Evil 6, even in low quality) it shutdown pretty fast and without feeling so hot.
So I am wondering if maybe this time it would be a problem with the graphic card/driver. Let's say something like a command than crash the graphic card.
I have a AMD Radeon HD 7670M with the driver version 8.932.5.3000 (the only one available for this computer and Windows 7 64 bits on the Toshiba website).
Is there a know issue that could cause the graphic card to crash or overheat more than expected with this model?
(If you wonder why I didn't wrote s*ck in full letter, it is because the profanity filter on this forum don't think it is a word that can be used in normal conversation.)

>When trying to play 3D games, after more or less time playing, often less than 10 minutes, my Satellite will suddenly shutdown. Afterwards, it can't be booted up again before some time.
To me it sounds like a GPU has operated at full capacity and produced lot of warmness leading to high internal temperature.
In my eyes the unit shut down due to the high temperature.
The notebook supports a kind of hardware protection. The unit will shut down automatically to prevent the hardware from damage.
Dust and debris might be one of the reasons why the parts cannot be cooled down properly.
>This sort of symptom is generally due to overheat, a common problem with Satellite laptop
This sort of symptom happens to all notebooks worldwide because of air circulation.
>I can leave it on a 2D game or old low quality 3D games (say Supreme Commander in low quality mode) for hours without problem, even in hot weather, but as soon as I try a newer game (for example Resident Evil 6, even in low quality) it shutdown pretty fast and without feeling so hot
Running games on low quality does not stress the GPU a lot and this lead to low heat dissipation and low temperature.
>Is there a know issue that could cause the graphic card to crash or overheat more than expected with this model?
I dont think so mostly such issues can be resolved by changing the settings within the windows power options (decreasing the CPU/GPU performance, change of cooling method) and of course within the game settings (low details, etc)

Lenovo T420 Integrated Camera Crashes

I have a Lenovo T420 and have some funky issue with my Integrated Camera. The camera seems to crash whenever I pull the display closer towards the keyboard. And if the display makes a 90 degree angle or less with the keyboard it never works. See below drawing for problem details.
Can anybody help me shed some light on this weird problem and how I might fix it?

It does not happen on my T520 with Fedora 18.

Macbook suddenly shutdown and freezy at boot

A few days after a successful snow leopard my macbook suddenly shutdown and now when i try boot the computer freeze at the blank screen and the loading logo stay running.
Someone had experienced a issue like this?
And someone have the magic steps to solve this issue without reinstall the SL.
Message was edited by: capelete

Try using Disk Utility to do a Disk Repair, as shown in this link, while booted up on your install disk.
You could have some directory corruption. Let us know what errors Disk Repair reports and if DU was able to repair them. Depending on what install method you chose, any problems you had with 10.5 could be transferred the the new install. You may not have realized you even had any.
Then Repair Permissions.
 DALE

[SOLVED] Blank screen since full update Lenovo T420

I just did a full update after a couple of months on my Lenovo T420. The update was successful, no errors reported. I decided to reboot for good measure because the kernel probably changed. I was met with a blank black screen right when the BIOS hands it off to arch, no usual scrolling messages. I've waited over 30 minutes on it, no hard drive activity.
Ctrl-Alt-Fx don't work.
How do I proceed from here? I assume I can load some livecd and look up a log somewhere. Where should I look?
Any help is appreciated.
Edit: I was able to boot into it by rolling back to the previous kernel 3.12.1-3. However, now it gives 'Failed to Start Load Kernel Modules' during boot.
Edit 2: The error message is gone after I downgraded tp_smapi to 0.41.39
Last edited by dave_null (2014-02-04 06:14:24)

So I installed linux-lts, and it solved the issue. I get full resolution console and X now. So I guess the latest kernel has a bug in it. Unfortunate.

Lenovo T420 Unexpected Sudden Shutdown Issue

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