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Lenovo T420 startup issue

Q: Lenovo T420 startup issue

Hello, It seems I installed a wrong software and I can't now start my wondows.So for the timebeing the boot screen are rebeeting over and over without reaching windows.Thinkvantage button/ F11 doesn't work. I can only access the boot/setup menu Is there any way to restore my system without reinstall the windows again? Thanks.

RELEVANCY SCORE 200
Preferred Solution: Lenovo T420 startup issue

I recommend downloading and running Reimage. It's a computer repair tool that has been proven to identify and fix many Windows problems with a high level of success.

I've used it in the past to identify and fix everything from blue screens (BSOD's), ActiveX errors, corrupt files and processes, dll/exe/sys errors, recover lost memory, Windows update problems, defragging, malware removal etc.

You can download it direct from this link http://downloadreimage.com/download.php. (This link will automatically start a download of Reimage that you can save to your computer.)

A: Lenovo T420 startup issue

Try using the step provided below.http://windows.microsoft.com/en-MY/windows-vista/Using-Last-Known-Good-Configuration




*Non Lenovo employee*I have a Y2P (i5) ... Feel free to ping me if you want me to test some applications with your Y2P if you have the same model. I don't mind keep doing recovery on it if needed .... =)

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RELEVANCY SCORE 66.8

Having shutdown problem with Lenovo T420 Notebook. Lenovo T420 default come with OEM Windows 7 Pro and we upgrade it to windows 7 Ent After upgrade, join domain, install bitlocker and perform windows update. Normally user sometime won't shutdown their
notebook on 2-3days because they using it on production environment. when try to shutdown windows 7 after 2-3days, it can shutdown windows 7 and LCD screen blank but the notebook power indicator light still on. I need to press the power button for few second
to power off the notebook. Any solution to solve? Called to Lenovo they request me to just get the patch from Microsoft, Lenovo support did not give me what is the patch i need to install. Any one having this experience? Already do the fresh installation of
the windows but the problem still remain on many unit of our T420 Notebook

A:Windows 7 Enterprise on Lenovo T420 Shutdown Issue (can suhutdown system but can not power off notebook)

Have you tried to update the BIOS yet?  If not, that would be a good place to start.  You can also try pulling the battery out while having the laptop plugged in and see if you get the same results.  If so please let us know.

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RELEVANCY SCORE 55.6

Lenovo G50 laptop showing Novo Button Menu repeatedly during startup. It's toggle between Novo Button Menu and Lenovo logo on the black screen. Even after removing battery it's not working. Can anyone help please. Thanks in advance.

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RELEVANCY SCORE 55.6

HI Team, This is regarding my personal laptop - Y50-70 (20378)Reloaded it over the holidays. Went full tilt, upgraded the BIOS to ver 3.03(9ecn43ww) form version 3.0 (9ecn40ww).All was well for a day, then I noticed it would shut down randomly.It would wake from sleep randomlyand the BIGGEST issue...turning it on from cold restart or reboot, time to lenovo splash screen can be anything from 1 minute to 1 hour.I obviously got the previous BIOS, set it to back flash.BUTeverytime I try, it tells me "invalid image"It doesn't matter how many times I download 9ecn40ww, it tells me "invalid image"and wont revert to version 3.( i have downloaded this from different PC's to be sure)From here: https://download.lenovo.com/consumer/mobiles/9ecn40ww.exeI am 90% sure it is a BIOS issue. (unplugged all devices and tested)I have re-flashed version 3.03, but all it seems to have done is hide more options.(I don't really want to edit the .ini file and force it not to check the version, just incase I am missing something)This is giving me grey hair!!!!Any help would be appreciated.

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RELEVANCY SCORE 55.2

 lenovo thinkpad t420 intel dual core i7-2640m 2.80ghz 8 gb ddr3 intel hd graphics 3000 That's my laptop details.. Can I change or upgrade my graphics card??????? Anyone know what can I do ? I can upgrade?Or I can change the Intel HD graphics 3000? If yes I have to change processor?What would be the best case for me if I want to use that laptop for gaming?And I can change it wich card could I put in??Apologies for my English I m still learning 

A:Help with the Lenovo t420

lenovo thinkpad t420 intel dual core i7-2640m 2.80ghz 8 gb ddr3 intel hd graphics 3000 That's my laptop details.. Can I change or upgrade my graphics card??????? Anyone know what can I do ? I can upgrade?Or I can change the Intel HD graphics 3000? If yes I have to change processor?What would be the best case for me if I want to use that laptop for gaming?And I can change it wich card could I put in??Apologies for my English I m still learning 

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RELEVANCY SCORE 55.2

 lenovo thinkpad t420 intel dual core i7-2640m 2.80ghz 8 gb ddr3 intel hd graphics 3000 That's my laptop details.. Can I change or upgrade my graphics card??????? Anyone know what can I do ? I can upgrade?Or I can change the Intel HD graphics 3000? If yes I have to change processor?What would be the best case for me if I want to use that laptop for gaming?And I can change it wich card could I put in??Apologies for my English I m still learning 

A:Anybody please help with the Lenovo t420

lenovo thinkpad t420 intel dual core i7-2640m 2.80ghz 8 gb ddr3 intel hd graphics 3000 That's my laptop details.. Can I change or upgrade my graphics card??????? Anyone know what can I do ? I can upgrade?Or I can change the Intel HD graphics 3000? If yes I have to change processor?What would be the best case for me if I want to use that laptop for gaming?And I can change it wich card could I put in??Apologies for my English I m still learning 

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RELEVANCY SCORE 54.8

Any advice?I have a Lenovo Z500 that i purchased from UAE and recently it stopped booting up unless AC power is plugged. after this; i can remove the AC and it runs well on battery - for untill the battery drains out. then again, i can startup unless i plug AC.What is happening? Any advice?

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RELEVANCY SCORE 54.8

Is it safe to change the ram frequency of my lenovo t420 i5 having ddr3, single channel ,FSB DRAm of 1:5 and my cpu is 2.50 GHz? It shows that it is running only with 664.MHz dram frequency. I am thinking if i can change it to 1600 MHz frequency...any help?
 

A:t420 lenovo windows 8 help?

DDR double-clocks, yours is running at 1333MHz.

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RELEVANCY SCORE 54.8

Hi Folks,I recently bought a refurbished Lenovo T420 which is a very nice piece of Kit, I am Hard of hearing and mostly use headphones for audio. However, this T420 seems to have something else other than the 3.5mm combo socket in place, on the right corner panel, just before the CD tray. The company I bought it from indicated that it should not be there and they suggested I try to  "Pry it out with a needle"?.Obviously I'm not going to do that untill I know what this is and why its there? I cannot connect normal head phones because there is no 3.5mm socket. Can anyone identify what this is please?3.5mm socket should be here

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RELEVANCY SCORE 54.8

Hi Folks,I recently bought a refurbished Lenovo T420 which is a very nice piece of Kit, I am Hard of hearing and mostly use headphones for audio. However, this T420 seems to have something else other than the 3.5mm combo socket in place, on the right corner panel, just before the CD tray. The company I bought it from indicated that it should not be there and they suggested I try to  "Pry it out with a needle"?.Obviously I'm not going to do that untill I know what this is and why its there? I cannot connect normal head phones because there is no 3.5mm socket. Can anyone identify what this is please?3.5mm socket should be here

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RELEVANCY SCORE 54.8

Hello I have tried to create GPS-connect but without success. I`m put the SIM-card (no in use) to the right place. I have checked the drivers and Device Manager but everything seems to be OK. I have no idea what else I can do? 

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RELEVANCY SCORE 54.8

Hello,I have a Lenovo T420 laptop 4236AR2 (integrated graphics Intel HD graphics 3000).Can you tell me what version of DisplayPort supports this machine: 1.0, 1.2 or 1.3 or something? Thank you in advance

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RELEVANCY SCORE 54

Dear all,

I went through the different steps mentioned in "clean-up-factory-bloatware" article, apart from last point which consists of re-installing my machine! But still I have BSOD and it drives me crazy.

I attached the DM Log Collector results. Hope you'll be able to find what causes this.


Thanks for your help
Isma

A:[BSOD] Lenovo Thinkpad T420

Similar errors from NVIDIA,








  
Quote: Originally Posted by Arc


Though there are other issues, like some unnecessary nvidia services ...

Code:
BugCheck 7F, {8, 80050033, 406f8, fffff88004d5103f}

*** WARNING: Unable to verify timestamp for nvkflt.sys
*** ERROR: Module load completed but symbols could not be loaded for nvkflt.sys
Probably caused by : dxgmms1.sys ( dxgmms1!VidSchDdiNotifyInterruptWorker+ab )

Followup: MachineOwner
---------
....


You could try an older driver version.


Code:
Microsoft (R) Windows Debugger Version 6.2.9200.20512 X86
Copyright (c) Microsoft Corporation. All rights reserved.


Loading Dump File [C:\Users\admin\Downloads\LT-IT39-27_10_2014_134204_61\102714-6988-01.dmp]
Mini Kernel Dump File: Only registers and stack trace are available

Symbol search path is: SRV*c:\symbols*http://msdl.microsoft.com/download/symbols
Executable search path is:
Windows 7 Kernel Version 7601 (Service Pack 1) MP (4 procs) Free x64
Product: WinNt, suite: TerminalServer SingleUserTS
Built by: 7601.18409.amd64fre.win7sp1_gdr.140303-2144
Machine Name:
Kernel base = 0xfffff800`02c4b000 PsLoadedModuleList = 0xfffff800`02e8e890
Debug session time: Mon Oct 27 17:10:16.177 2014 (UTC + 6:00)
System Uptime: 0 days 0:13:32.859
Loading Kernel Symbols
...............................................................
................................................................. Read more

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RELEVANCY SCORE 54

My laptop LCD has been out for awhile and I've been using with an external monitor, but I decided to fix the LCD so I ordered a new LCD screen for it. The lcd screen arrives, install it and picture still doesn't show up. I then thought maybe I just had a bad cable from motherboard to LCD so I replaced that.. still no luck.

I can see a faint image in the background, but it's very dark. Same with my original screen.

What's odd is before my original laptop would show a just scrambled picture of black and white-- which is why I originally thought it was LCD.

What would the next step be? To order a inverter? Do the symptoms above sound like it's a bad inverter?

A:Lenovo ThinkPad T420 Bad Inverter?

This may or may not answer your question.
How-to: Lenovo Laptop Dim LED Screen Backlight Fuse Repair

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RELEVANCY SCORE 54

Hello everyone I bought one LCD screen with the resolution 1366x768 for my Lenovo t420 but the back light don't work pleas can someone help me  ps: sorry for my bad English 

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RELEVANCY SCORE 54

Hi, I bought a Lenovo Thinkpad T420 from an online auction. It had no hard drive. So I went to the Microsoft Windows 7 download page and typed in the Windows Pro 7 COA and Microsoft responded with that is a pre-installation OS and I need to contact the manufacturer. I installed a new SSD and will need re-install the operating system. So where do I get an installation disk? Does Lenovo provide this? I am stuck with a non-functioning laptop? Regards,Martin  

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RELEVANCY SCORE 53.6

I just got a refurbished Lenovo PC-Thinkpad T420.  I think my 420 is stoned.  When I try to face chat (or whatever you call it) I can't hear them but they can hear me.  Where do I go on my device to check to see if something is wrong with receiving voice?       

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RELEVANCY SCORE 53.6

Hi, I have Lenovo T420, my HD includes bad sectors, i'd like to replace it with a new one.My current HD should include win 7 installation files and lenovo recovery as it came from the factory.How can i make the same on the new one without copying from the old one? Thanks, 

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RELEVANCY SCORE 53.6

Hello, I rescently bought a lenovo t420 from a vendor thats not lenovo. It was find for a while, but then it got a malware virus. i did a removal of the malware. I then powered it on again but it displayed the thinkpad logo and the next screen was just black with a blinking underscore in the corner. I downloaded a diagnostic program to a usb and ran it. This is what the log says-> http://paste.ubuntu.com/p/P8H5BrGqmc/ Any help would be appreciated.

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RELEVANCY SCORE 53.6

The free upgrade to win 10 pro failed several times.  I checked the web for problems and as a result uninstalled malwarebytes, antivirus, some drivers and some Lenovo stuff that popped up.  Finally the upgrade using the Media tool was successful.  Win 10 pro is now working on the T420.  However, only the Lenovo Companion is installed.  I bought a Yoga with Win10 pro and it came with Lenovo Companion, Settings and Account.  I have been trying to find a way on the Lenovo site to download the Settings and Account programs, but no luck.  Any suggestions?  (Probably a simple solution and I am just missing something obvious....)

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RELEVANCY SCORE 53.6

Hello, I've owned this Lenovo T420 for 8+ months. I have been receiving random BSODs monthly, starting a couple months back, before then, I dont remember having them ever. More recently it has become weekly. Some days there is more than one. Today I've had 6. A couple of them occurred randomly just browsing on Chrome. Twice after I was connected remotely to a clients VM software. Then a couple times just booting up.

Currently I am connected to another client via RDP, browsing, and haven't had any issues for past hour.

I've ran the dm logger tool instructions and am attaching zip to this thread.

The only virus scanner I use is malwarebytes free and don't have any active ones. I've disabled windows updates because I've had issues with them in the past on this laptop.

Thank you,

Scott

A:Lenovo T420 Random BSOD Occuring

Hi Daimyo21,

Welcome to the 7forums

If you have only Malwarebytes as protection, please install Microsoft Security Essentials
The software from Malwarebytes is NO Anti-Virus program and is not meant to run single on a system as AV.

Please install all updates from Windows Update available and check Lenovo for BIOS updates.

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RELEVANCY SCORE 53.6

Hi all,i am new to this forum,i bought t420 last mounth from USA. Yesterday i spilled liquid on the clicks on touchpad. The right button works but it freezes sometimes, left doesnt work at all. Because i am in Europe now,the warnity does not cover.Do you have any idea how it can be fixed. Also the ultranav buttons dont work. With external mouse it works.Could you send me a link from a trackpad or some ideas.Thanks in forward.













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A:Touchpad buttons not working on lenovo t420

I guess the only thing to do is to take it apart and clean it;http://download.lenovo.com/ibmdl/pub/pc/pccbbs/mobiles_pdf/0a60007.pdf 





_______________________________________________________T420s, i5-2520M @2.5, nVidia 4200m, 8GB DDR3, OCZ Vertex 3 Max IOPS 240GB SSD, Hitachi 320GB @7200rpm ulrabay, 8Pro x64T61, Centrino Duo @1.8, GM965, 4GB PC2-5300 DDR2 @667MHz, OCZ Agility 120GB SSD, 7Pro x64

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RELEVANCY SCORE 53.6

Hi have had this problem with the laptop since i got it. Have tried updating all drivers and the system bios, which has seemed to reduce the frequency of the freeze and shutdown, and searched for solutions on the net but I seem to be going round in circles. Please assist me in finding out what the problem is and how i could fix it. I have attached the necessary files.

A:Lenovo T420 random freeze and shutdown

Antivirus Software:
Code:
egui.exe c:\program files\eset\eset nod32 antivirus\egui.exe 6000 8 200 1380 3/2/2012 3:39 PM 4.2.71.2 2.12 MB (2,219,184 bytes) 1/12/2011 3:41 PM
ekrn.exe c:\program files\eset\eset nod32 antivirus\ekrn.exe 2508 8 200 1380 3/2/2012 3:38 PM 4.2.71.2 791.16 KB (810,144 bytes) 1/12/2011 3:41 PM
Your most recent .dmp files were from October. Make sure you have your system enabled for generating dump files. Dump Files - Configure Windows to Create on BSOD OPTION TWO part 2. will configure them properly. Also, avoid using any disk cleaning software (CCleaner, Windows Disk Cleanup, etc.) after a crash occurs.

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RELEVANCY SCORE 53.6

Hi, I have a T420 running Windows 10 with LSC 3.2.002 injstalled. The Solution center does not show the system tab and hence I cannot do anything with it. Any suggestions? 

A:T420 Lenovo Solution Center 3.2.002 Not showing Sy...

Did you ever find a solution to this?   Not a good sign that they're ignoring your question.

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RELEVANCY SCORE 53.6

Hi guys, I just spilled a glass of water on m Lenovo T420 laptop. I immediately turned it off and kept it upside down for a while and haven't turned it on for 8 hours now. Is there something I should do to avoid damage? E.g. how long should I wait and  should I do something to dry it more? Help appreciated! Thanks,Joel

A:Water spillage on Lenovo T420 keyboard

Hi Lenoovoo,
 
Welcome to the Community Forums.
 
I would rather that you remove the battery and take it to a service center for general cleaning informing them of the immediate concern about the water spill. Do not attempt to power it on as tools may be needed to safely dry it up internally avoiding other issues.
How to Locate a Repair Center or Service Provider
 
If you have such skill and tools then you can use the hardware manual here a reference guide.
 
Hope this help answer your query.
 
Regards

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RELEVANCY SCORE 53.6

Hi I am new to this community, so I would like to applogise if I mist a simillar subject (I did check some but non resolved my problem). I have a thinkpad t420, I bought a used one. It worked great, and I bought it from a friend, that I trust. I installed a ssd drive, was usnig Linux, and everything worked for one month. But then I bought a HDD caddy, and replaced the CD rom. After that my thinkpad worked for a day (although it didnt recognize the second HDD). The next day I tried searching BIOS for some settings, and after restarting my laptop it was stuck on Lenovo splash screen, rebooting in a loop. I tried:- removing and replacing the caddy with the CD rom,- replacing my SSD drive,- replacing RAM (both slots),- reseting BIOS,- running a diagnostic CD (but it will not boot, neither can I boot from an USB) My google search showed that it could bi a problem with one of the USB pins inside of one of the ports (short circuit or something like that), but I could not finde any damage. So I am thinkig that the motherboard could be damaged, but I can access BIOS, but that is the only thing I can do with it. I would be wery thenkful for any advice or help, before I go to an official Lenovo service for help. Thnak you! Z.













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Go to Solution.

A:T420 stuck on Lenovo splash screen

Hi Zjaz123456,
 
Welcome to Lenovo Community!
 
As per the query we understood that you are facing issue with not booting to OS on your ThinkPad T420.
Is both HDD &SSD detecting in BIOS?
 
Check with removing CMOS battery, make sure you have disconnected the system from AC adapter and battery is removed.
 
Remove both the drive & battery from the system, disconnect the power adapter. Press and hold the power button for 15 to 20 sec perform this step for 2 to 3 times and then connect only the drive which is having OS installed in it. Use only power adapter to switch ON the system.
 
Hope this helps. Do post us back for further assistance!
 
Best regards,
Hemanth Kumar





Did someone help you today? Press the star on the left to thank them with a Kudo!If you find a post helpful and it answers your question, please mark it as an "Accepted Solution"! This will help the rest of the Community with similar issues identify the verified solution and benefit from it.Follow @LenovoForums on Twitter!

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RELEVANCY SCORE 53.6

Lenovo T420, Type 4177-CTO. Windows 7 Pro, 64 bit.  8 GB RAM,  500 GB HD, third party 128 GB SSD added. After inspecting many laptops I chose the ThinkPad T420. The only better laptop was Apple and I needed different software. An important consideration for any computer is support. Lenovo has excellent support at 1-800-426-7378. Tech support and repair happens right here in the United States.  Repairs are done in Tennessee. The Lenovo ThinkPad T420 is a solid laptop. It is not as light as some laptops but strength and durability need to be considered. Weight of machine with a large 6 cell battery and a slice battery = 6 lb. 7 oz. (3060 kg). The laptop weighs 5 lb. 5 oz. (2430 kg) with just the large 6 cell battery. The 6 cell battery weighs 1 lb. 1.5 oz. (500kg) and the 6 cell battery would then weigh 1/3 less. You can compute the difference. Keep in mind my battery life with the slice battery installed is about 17 hours. The slice battery also places the laptop on a slight angle with the rear elevated. It is about the same tilt as with the docking station. You cannot have the slice battery installed while the laptop in in the docking station. The 6 cell battery sticks out the back so it is not a perfect cosmetic fit. The 4 cell battery will look nicer, be lighter and probably last about 4 hours. The overall design is perfect in my opinion. I find no problems. The T420 uses the LED night light that shines from the top of the display to ... Read more

A:Lenovo T420, Type 4177 Review

WOW!  Thanks for taking the time to write that up.  Lots of frequently-asked questions right here in this forum are answered in your review, plain-and-simple, easy for anyone to understand.

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RELEVANCY SCORE 53.6

For updating my T420 in Lenovo support website, I installed the Lenovo Service Bridge. However, my security software detected it as a malware and deleted some files. Then every time the laptop starts, there will be a couple of pop-up windows (see lingks below), which is the same when I click the service bridge installation file. So I doubt that the service bridge is running somehow at the backstage. http://i.imgur.com/EBHdq8c.jpg http://i.imgur.com/P7t33ax.jpg When I clicked the detail button, a log file came out. PLATFORM VERSION INFO
Windows : 6.1.7601.65536 (Win32NT)
Common Language Runtime : 4.0.30319.34209
System.Deployment.dll : 4.0.30319.34244 built by: FX452RTMGDR
clr.dll : 4.0.30319.34209 built by: FX452RTMGDR
dfdll.dll : 4.0.30319.34244 built by: FX452RTMGDR
dfshim.dll : 4.0.41209.0 (Main.041209-0000)

SOURCES
Deployment url : https://download.lenovo.com/lsb/LSB.application
Server : Apache

IDENTITIES
Deployment Identity : LSB.application, Version=1.3.0.0, Culture=neutral, PublicKeyToken=91a10ba61c75c82d, processorArchitecture=msil

APPLICATION SUMMARY
* Installable application.

ERROR SUMMARY
Below is a summary of the errors, details of these errors are listed later in the log.
* Activation of https://download.lenovo.com/lsb/LSB.application resulted in exception. Following failure messages were detected:
+ Activation failed.
+ The system cannot find the file specified. (Exception from HRESULT: 0x80070002)
... Read more

A:Uninstall Lenovo Service Bridge on my T420?

Will any Lenovo support help me solve this issue?

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RELEVANCY SCORE 53.2

I thought my problem was, mic not working; I finally saw in control panel "lenovo - microphone mute".I can see a need for mute. How can I disable this function. 

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RELEVANCY SCORE 53.2

Dear Community, a friend of mine has a problem. He upgraded the Laptop to Windows 10 for about 6 months ago. His Webcam is not found. There is no Imaging Device in the Device Manager and there is also no "Unknown Device" in it. The Driver for integrated Camera from lenovo site did not help. I used the Forum search but the entries did not help either. Anyone knows a solution? Greetings from Germany

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RELEVANCY SCORE 53.2

lenovo thinkpad t420 intel dual core i7-2640m 2.80ghz 8 gb ddr3 intel hd graphics 3000That's my laptop details..Anyone know what can I do ? I can upgrade?Or I can change the Intel HD graphics 3000? If yes I have to change processor?What would be the best case for me if I want to use that laptop for gaming?Apologies for my English I m still learning 

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RELEVANCY SCORE 53.2

Hello!I just bought a Lenovo T420 without a WIFI -Card, Is there any way to remove this so i can use a 6235 Intel card instead of the 6205 which was in it originally?

A:Lenovo T420 remove BLACKLIST WIFI CARD??

Welcome to the Lenovo Community!
 
Actually, it's not a blacklist, but a whitelist.Anyway, I suggest flashing this modified BIOS version: https://www.sendspace.com/file/0whb9r
 
In addition to the removed whitelist, it has several other advantages over the original BIOS.
 

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RELEVANCY SCORE 52.4

I am in Hong Kong. Sorry if my English is not good. I hope this forum could help with the bluetooth problem I am encountering. I have a T420. My wireless Philips headset coupling with T420 had been working fine for a long time until several days ago when I tried to use it again listening music from the computer. I found my wireless headset could no longer connect to the computer. In order to pair up again my headset with the T420, I tried to set the computer?s option to "allow Bluetooth devices to find this computer." However, the computer disallowed it with an error message and required the removal of Bluetooth device but there was indeed no Bluetooth device connected. I also opened the Device Manager but could not locate any Bluetooth. I would appreciate a lot if someone could advise me what to do.

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RELEVANCY SCORE 52.4

I have a T420 but the Microphone doesnt seem to work.  I've read many posts about these issues but nothing I've found has solved my issue. I've tried three drivers: 1. Windows Default driver:  The microphone shows up in the CP recording tab however it doesnt record any sound at all2. conexant 20672 driver (8.32.23.5) from Windows Update and (8.32.44.0): The microphone doesnt show up at all in the recording tab Some have said to goto the advanced tab and disable "Enhancements" but I see no option.I've tried FN-F6 and tried many permutations with no difference.

A:T420 Microphone issue

Hi eng3,
 
Welcome to Lenovo Forums!
 
Try this, go to control panel / sound / manage audio devices
Go to the recording tab, click ?internal microphone", then properties.
Then in the "level" tab make sure the mic is not muted (even if the level is at 100 %)
 
Please let me know whether the above steps helped you.
Thank you, have a good day.
 
Did someone help you today? Click on the ?upper half star? at the left side of the post to thank them with a Kudo!
 
Regards,
Naveen.v

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RELEVANCY SCORE 52.4

Hello all, could someone have a look at my dmp files. Although windbg points in the direction of PCI.SYS causing the stop errors, my knowlegde is far from sufficient to take the next step. When the laptop goes into sleep or hibernation mode, it crashes. Pretty consistent. Problem was introduced after an huge automatic update but this is something I realesed myself later. Thank you!

A:BSOD pci.sys error everytime after sleep mode Lenovo T420

Welcome

The BSoD seems to be caused by the older drivers of your Intel(R) Wireless WiFi Link Adapter driver


Code:
0: kd> !irp fffffa800bc8b630
Irp is active with 4 stacks 2 is current (= 0xfffffa800bc8b748)
No Mdl: No System Buffer: Thread 00000000: Irp stack trace.
cmd flg cl Device File Completion-Context
[ 0, 0] 0 0 00000000 00000000 00000000-00000000

Args: 00000000 00000000 00000000 00000000
>[ 16, 2] 0 0 fffffa800a2ce050 00000000 00000000-00000000
Unable to load image \SystemRoot\system32\DRIVERS\NETwNs64.sys, Win32 error 0n2
*** WARNING: Unable to verify timestamp for NETwNs64.sys
*** ERROR: Module load completed but symbols could not be loaded for NETwNs64.sys
\Driver\NETwNs64
Args: 00015500 00000000 00000005 00000003
[ 16, 2] 0 e1 fffffa800a027c70 00000000 fffff800038c8200-fffffa800b348ab0 Success Error Cancel pending
\Driver\vwifibus nt!PopSystemIrpCompletion
Args: 00015500 00000000 00000005 00000003
[ 0, 0] 0 0 00000000 00000000 00000000-fffffa800b348ab0

Args: 00000000 00000000 00000000 00000000
0: kd> lmvm NETwNs64
start end module name
fffff880`05cdc000 fffff880`0655e000 NETwNs64 T (no symbols)
Loaded symbol image file: NETwNs64.sys
Image path: \SystemRoot\system32\DRIVERS\NETwNs64.sys
Image name: NETwNs64.sys
Timestamp: Mon May 02 03:33:01 2011 (4DBDD18D)
CheckSum: 0083E... Read more

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RELEVANCY SCORE 52

I just bought a refurbished ThinkPad T420. A friend of mine said it had a good spec so I was looking forward to having a play around. Right from the minute I switched it on there was a problem. The touchpad and mouse are not working. The only way to use the mouse is via the track point (is that the right term?) and I hate it! It's way too fiddly. So I tried fn and F8... it doesn't work. I've tried rebooting and enabling the touchpad in the BIOS it doesn't work. I've deleted drivers. Still nothing. I've installed new drivers. Many tutorials say you can fix it using device manager, mouse etc. But the tab the recommend you choose is not there. I installed new drivers from synaptics and it says there is no synsptics device found. I am honestly going insane! Something that should be so simple and it's so awkward! Forgive me because I'm half asleep but I should mention when I first tried to fix it the tab in mouse properties that everyone says I should use (ultra something) well it was there. But when I tried to click any of the options on that tab I was kicked out and got an error messsge. Now that tab no longer appears. It's running on windows 10. I'm ready for launching it out the window. Help!

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RELEVANCY SCORE 52

Over the past year or so, I've noticed that every time I change the angle of my LCD, I'll hear the USB sound (like you've added or removed something) and then I will get a notice "USB Device Not recognized". In device manager there is an "Unknown device" listed.The only things I can think of are my webcam and microphone. I have noticed that my microphone wont work at all. My webcam works only when installing the right combination of drivers. I wouldn't think the microphone is a USB device though.

A:T420 USB issue when moving screen

Microphone, webcam and Thinklight are USB devices that all share a cable.  My guess is a cracked wire in the cable that goes through the right hinge.  Be sure to unplug the AC and remove the battery before working on the panel.  On that model, it is easy to blow a fuse. 

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RELEVANCY SCORE 52

Lenovo T420 missing INtegrated Camera, cant be detected by any 3rd party app (ie. bandicam) -I already installed the latest drivers but nothing happen (see pic file below) -already checked the BIOS and the camera is enabled but still no camera was detected -I tried troubleshooting but no luck -Tried going to settings fn+f6 but there is no camera settings there?(see pic below) -Checked device managaer suprisingly,also missing (see pic below) -I tried to add legacy hardware, but there are no integrated camera. Please hlep....... getting headaches for weeks because of this........ thanks in advance


























2017-06-13_18-42-46.png ?316 KB

A:Lenovo T420 Integrated Camera is Missing!!! HELP I TRIED ALOT OF SOLUTIONS BUT NOTHING WORKED

Hello and welcomeTo make sure the web camera is preinstalled in the laptop, provide, please, its Machine-Type-Model code, begins with 4177, 4178, 4180, 4236.

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RELEVANCY SCORE 51.2

I just purchased an adapter plug that allows me to connect my Lenovo/IBM thinkpad (T420) to my HDTV by plugging the HDMI cord into my TV and the other end to this adapter plug which converts the HDMI cable into a male plug which fits into my display port (there is no HDMI port on this model computer). It worked, but now I can't remove the adapter plug...it's stuck in the laptop display port. I do not know if the problem is caused by the male adapter plug or the female jack in the computer, but they're locked together now.

I have previously read review comments (on these HDMI/display port adapter plugs) mentioning this jamming happening on more than a couple occasions, but I don't recall any resolutions being mentioned except to break off (and destroy) the plug and possibly damage the display port as well. I called Lenovo tech support but they said I'd have to mail the computer to them to get it fixed. I'd prefer avoiding that if possible even though my warranty is still in effect and it would be of no cost to me.....just time lost without a computer.

I'd greatly appreciate hearing from anyone who may be aware of how to resolve this problem (and also how to avoid it happening again) without doing damage to either the plug or especially the computer display port.

Thanks for your consideration in any case....
 

A:Solved: HDMI adapter plug stuck in Lenovo T420 display port

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RELEVANCY SCORE 51.2

I have a T420 that I love.  I love the keyboard -- everything about it.  I'm not interested in upgrading at this moment since it works flawlessly with my current linux distro that I use for work.  I did want to upgrade to the 2540M processor since it's the highest I5 processor compatible with this system and my docking station.  I notice that there are T420's out there with the 2540M processor.  I purchased two different processors that came out of other T420's and they both seem to have the same problem.  When I plug in the processor, all I get is a continuously blinking power light.  The machine won't even boot to the CMOS settings. I've flashed to the lastest bios avialable on Linux support.  In fact, there was a bios update released recently.  The machine works fine with the exsting 2520M processor with the integrated Intel 3000 graphics.  Why wouldn't I be able to plug in a lenovo 2540M chip in my machine?

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RELEVANCY SCORE 51.2

My T420 laptop is capable of 1600 X 900 screen resolution. After changing the resolution temporarily to 1024 X 768,I tried to change it back a couple of hours later to 1600 X 900. However, now I do not even see 1600 X 900 as an option.The highest option is its' current setting of 1024 X 768. Can someone tell me how I can get the 1600 X 900 resolution to show upagain as an option so I can change the screen resolution back to its' factory setting? I do not know what could have happenedexcept for maybe a windows update took place before I attempted to change the screen resolution back. Any helpwould be greatly appreciated.  

A:T420 Screen Resolution Change Issue

hey Quinn,welcome to the forums. could you check the graphic card version on your unit and compare it to the version available on http://support.lenovo.com .is it the same or is the one on the support site ? If both of it is the same, uninstall the graphic driver from your unit and then download the driver from our support site.do not install it yet, set your unit to diagnostic mode via msconfig first and then only install.





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RELEVANCY SCORE 50.8

My pc was running well and I decided to reinstall windows but this time I have problem...I have windows 10 and my laptop is Lenovo Thinkpad T420  My power plan minimum and maximum processor state are both set to 100% and for some reason i can't change them, they are like stuck to 100%. Even when I try to restore my settings to default the maximum and minumum processor state will still remain at 100%. I want to change my minimum processor state to 5% and maximum to 80%. I did it everytime after reinstalling windows and this time it just don't work. My laptop is overheating a lot while I'm playing games or just watching videos. I already tried to reinstall windows for one more time and first thing I did was changing maximum processor state in power options but it didn't let me type other number except 100%.  To be more clear what is my problem, here is recording of it: Please help, much appreciate, Thank You!

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RELEVANCY SCORE 44.8

Does anyone know the functions of the Lenovo Utility app? I am aware that it flashes up with an on screen symbol when the caps lock or num lock is pressed but what else can it do? I only ask as I want to disable it in order to stop the on screen notification that caps lock is on from appearing everytime I press the key. However I read somewhere that the app also handles the battery management and don't want to disable it if it will harm my pc. When I go into details in task manager it just appears as Lenovo Utility. So can I safley diable it? or will it cause an issue? Thanks   

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RELEVANCY SCORE 44.4

Hello everyone, Since about five days ago, everytime I turn on my laptop, it starts normally. It goes into the black-background lenovo startup with a white loading symbol. Then, after maybe 5 rotations of the dots in the loading symbol, it freezes. It does not progress into starting up. At this point, I usually turn off my laptop by holding the power button. If I don't turn it off myself, it turns off automatically a few minutes later.  Every 2 or 3 times I turn on my computer, instead of the loading symbol, it turns into a "Preparing Automatic Repair" mode. I have seen the loading symbol for this mode but then it disappears and nothing happens and it turns off automatically after ten minutes or so. I've seen the same solution that help others with the same problem which is to take out the DVD from the laptop. I did this and my problem has not changed.  edit: g500 to g505

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