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t420 lenovo windows 8 help?

Q: t420 lenovo windows 8 help?

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?

Preferred Solution: t420 lenovo windows 8 help?

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: t420 lenovo windows 8 help?

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

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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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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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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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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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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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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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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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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.

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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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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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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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

A:[BSOD] Lenovo Thinkpad T420

Similar errors from NVIDIA,

Quote: Originally Posted by Arc

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

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.

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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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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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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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.

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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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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:
egui.exe c:\program files\eset\eset nod32 antivirus\egui.exe 6000 8 200 1380 3/2/2012 3:39 PM 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 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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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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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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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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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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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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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,


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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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)

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

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

* Installable application.

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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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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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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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


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

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
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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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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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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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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Hi there, I am thinking to upgrade my T420 from windows 7 Pro. to Windows 10 Pro.  I have checked on the Lenovo page but they dont seem to have the drivers for Windows 10 yet.  Also, the T420 model is not listed on the Lenovo Windows 10 compatibility list.  Does anyome have more info on this? Did some of you tried installing Win 10 on the T420 series?  PLease let me know, much appreciated. Chris

A:T420 and Windows 10 upgrade

The T420 isn't officially supported by Lenovo for Windows 10. It should still install and run fine, but you'll need to source your own Windows 10 compatible drivers from OEM sites.There are also driver aggregator sites out there like station-drivers (French, but the download button is obvious).

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I have T420 Laptop (ThinkPad - Type 4178A3) ond Windows 8.1 64bit. In my windows device manager I have one device without driver. All windows updates (including optional) are installed.I also checked my laptop via Lenovo System update tool in support page (Drivers & Software tab) with a message "No drivers are required to update for your machine". The device with missing driver is in category Other devices / PCI Serial port.The location is : PCI bus 0, device 22, function 3Details:harware Ids:PCI\VEN_8086&DEV_1C3D&SUBSYS_21CE17AA&REV_04PCI\VEN_8086&DEV_1C3D&SUBSYS_21CE17AAPCI\VEN_8086&DEV_1C3D&CC_070002PCI\VEN_8086&DEV_1C3D&CC_0700 Could anyone help which driver I need? Thanks in advance 

A:T420 driver Windows 8.1

Reference this post:https://forums.lenovo.com/t5/ThinkPad-P-and-W-Series-Mobile/PCI-SERIAL-PORT/td-p/1653731

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Hi, the speaker on my tasklist does show the speaker symbol with an red x. When I move over then I get the message that no audio device is installed. When I do a click on the speaker symbol the automatic problem analysis is started and I get the message that I haveto restart the computer. But it does not work Here are some observations : -when I shutdown the TP at the end of the process I here a beep. So the speakers work. - at some point in time in the past ( I do not know exactly when ) I have seen this speaker symbol with the red x. When I did the actions as mentioned above after a reboot the speaker worked well. When I did a restart again the speaker didn't work. I could do this for some time. Then this also didn't worked. - Then I have re installed the TP ( I have an upgrade from windows 7 -> windows 10). I used my initial windows 10 backup right after the upgrade. After the system backup had been installed I had the same speaker problems. Then the automatic windows update downloaded new files. When I restarted the TP after this process the speaker worked well again. When I restarted the TP again after a while the speaker didn't worked. Now I have given up and write these lines Any idea ?

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Hi,I have ThinkPad T420.Could someone help to find drivers for these devics:1) USB\VID_0BDB&PID_1911&REV_00002) PCI\VEN_1180&DEV_E823&SUBSYS_21CE17AA&REV_053) PCI\VEN_8086&DEV_1C3D&SUBSYS_21CE17AA&REV_04 I just upgraded to Windows 10, and i can`t find these drivers. On support page there are no drivers for Windows 10. I tried to use lenovo system update, but inly thing it installs is "Device dependency". Best regards.


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A:T420 driver problem windows 10

Hi and welcome, kavramenDevices in your list are:1. Ericsson F5521gw (wwan card)2. Ricoh PCIe SDXC/MMC Host Controller (media card reader)3. Intel 6 Series Chipset Family, Management Engine InterfaceI didn't find related drivers yet.

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Hi everyone, I just did a clean install of windows 7 professional 64 bit on an old T420 laptop, downloaded the various drivers from the lenovo support page.i have installed the windows 10 uprade assistant, and when checking compatibility it passes everything but the display?i had the graphics drivers installed and everything seems to be working fine, screen res goes up to 1600x900.as far as im aware win 10 should install on this machine, id like to get it done while the free upgrade is still possible, can anyone help me figure out why this isnt working? Thanking you very much in advance! 

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Does anyone have any experiance about windows 10 and t420 fingerprint reader? Is it working to log in with this to Windows 10 (Windows Hello)?

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Hi there. I recently received this gift (Thinkpad T420) with Windows 7 Pro 64. Although it is okay, I am much happier with my Windows 8.1 on my other laptop (which is dying). I've gone to the support/download drivers pages and found that there are only a few drivers available for Windows 8.1 (64bit). There are no audio drivers, no chipset drivers, no bluetooth drivers, etc. Would it be a HUGE mistake to install 8.1 on this box?

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I upgraded to Win 10 via Windows update.  All went well, everything worked fine, but I did later find out that Lenovo isn't supporting T420 with driver updates for Win 10.  While Windows 10 was still installed, I looked at the driver support page for the T420, Win 10 is not listed as an option in the drop down of OSs.  Accepting this, and not wanting to run into problems later down the road with future Win 10 updates, I rolled back to Win 7Pro.  Now I don't think I have a straight answer on whether the T420 actually is supported under Win 10 or not.  The first thing I did after rolling back was to go to the Lenovo driver support page.  Now it shows windows 10 in the drop down as a supported OS.  What's up with that?  I've looked in the forums and elswhere online and every indication is that the T320 is not officually supported.  Lenovo does not list it as supported.  But yet now Windows 10 drivers are listed for the T420, but only when I'm running Windows 7Pro, not when I'm running Windows 10.  I'm assuming that the website is autodetecting my current OS.  I can't make heads or tails of it.  I'd like to go back to Windows 10, but given the confilcing info from Lenovo...Anyone have any suggestions.

A:ThinkPad T420 and Windows 10 support

While there are some Windows 10 drivers available now for your T420, many are still missing, so I would wait until it is listed as upgradeable by Lenovo, and thus all the needed drivers are released, or risk having issues.   Until then, I would stick to 7pro...  Lenovo supported systems list for Windows 10 Upgrade (Last Updated :01 Apr 2016)https://support.lenovo.com/us/en/documents/ht103535#thinkpad Lenovo Windows 10 devices tested for November Update / Version 1511 (Last Updated :01 Apr 2016)https://support.lenovo.com/us/en/documents/ht104857#tp 

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 The audio was fine, until suddenly the tray icon was red x'd. Tried updating drivers- Windows Device Manager says 'no audio device installed'.  Uninstalled it, re-installed  from Lenovo Drivers.  Conextant 20672 Smart Audio HD, driver  8.32.44.  Still not recognized.  System Restore did Not fix it.  Researching brings no clear answers to  a cause or solution

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There are several Functon Keys F3,F6 and F8 not working in T420 in Windows 10 64 bit OS.

FunctionKeyMessage.png ?9 KB

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Hi, I restored windows on my wife's T420 using the recovery partition, and now it is asking for the activation key.  Unfortunately the sticker is worn and I can't make it out.  Why does the recovery partition want the key? I am frightened and confused, and too cheap to pay $50 for a recovery CD

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 The audio was fine, until suddenly the tray icon was red x'd. Tried updating drivers- Windows Device Manager says 'no audio device installed'.  Uninstalled it, re-installed  from Lenovo Drivers.  Conexant 20672 Smart Audio HD, driver  8.32.44.  Still not recognized.  System Restore did Not fix it.  Researching brings no clear answers to  a cause or solution

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Hello, I have Base System Device driver missing and wondered if someone could point me to the right direction. I have tried installing the Ricoh driver from the website to no avail. Tried many other from this site and others, still nothing :/ Full model number: 4180-PR1 OS: Windows 7 64 bit Hardware Ids:PCI\VEN_1180&DEV_E822&SUBSYS_213317AA&REV_08PCI\VEN_1180&DEV_E822&SUBSYS_213317AAPCI\VEN_1180&DEV_E822&CC_088001PCI\VEN_1180&DEV_E822&CC_0880 Thank you

T420 4180-PR1 - OS: Windows 7 Pro 64 bit

A:T420 Base System Device Windows 7 64 bit

I think you're missing ricoh card reader driver

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Ok, after trying many things to solve this issue, I turn to the community to try to help.I have a T420, i5-2520M, Windows 7 Pro, SP1, 64-bit. Everything was working fine until I switched off the wireless function using the manual switch on the right hand side of the laptop next to the DVD drive.When I switched it back on, the wireless network did not reactivate by itself. After waiting a little time, I hit Fn+F5 to see if it needed switching on via that control. The window came up with a message saying I needed to flick the manual switch back which I already done. I switched it off and back on anyway still with the F5 hotkey window open and nothing happened.I decided to try re-starting the laptop which brought the wireless network back on - except now the hotkeys, microphone mute, brightness controls etc won't work. The only hotkey that works is Fn+PgUp for the keyboard LED.I've tried uninstalling and reinstalling the Hotkey Features Integration software twice, once with the Lenovo Power Manager driver installed and once uninstalled. I've also reinstalled the Lenovo Power Manager but it makes no difference.The On Screen display works for Caps Lock, Volume and Mute.Would it have anything to do with the Windows Management Instrumentation (as it's listed as one of the dependencies)? I don't believe this has anything to do with my problem but I recently swapped the motherboard as my GPU was failing. The donor board has the same FRU. All installed fine, updated BIOS and ... Read more

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Hello fellow board members, recently I have bought a 2nd hand T420 laptop which is an absolute super device! The previous owner left me a clean windows 10 installation. After reading up on the hardware and the upgrade options, I decided to order a bluetooth daughter card (FRU 60Y3303 60Y3305) . I installed it, but the new bluetooth does not appear in the device manager. Has anyone had succes with getting it to work? ( i have tried a usb bluetooth dongle and this works perfectly, but i want to have the usb port free for other stuff) I have tried:- enabling/disabling bluetooth in the bios I/O menu- scanning for hardware changes in the device manager- pressing fn-f5 (this turns on airplane mode, but no bluetooth)- installing fn key shortcuts- installing power manager (installation seems succesfull, but no lenovo software shows up in the startup tab of msconfig)- installing legacy device from the device manager and manually adding the broadcom drivers - installing the lenovo bluetooth drivers (install cancels because it cannot find a bluetooth device)- Turning on the bluetooth service in services.msc- removing the battery, pressing the power button 15sec, putting the battery back, resetting bios to default. I have contacted the seller of the bluetooth card, but they do not seem to know what the problem can be. I now have the choice of getting a replacement card or a refund.  Does anyone know what the problem can be?  

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I have a Lenovo T420.  I'm trying to get the bluetooth working but no luck.Information about the system: Windows 7 ProAll latest drivers installed from ThinkVantage System UpdateBluetooth is ENABLED in BIOS (and BIOS at the latest rev)HOTKEYS installed (and deleted, and reinstalled)Fn+F5 (or running TpFnF5.exe) only shows the Wireless Radio.  It does not show the Bluetooth Radio.Downloaded Bluetooth with Enhanced Data Rate Software II for Windows 7 (7zwb06ww.exe), but when I run it and try to install I get the message 'No Bluetooth device was detected.  Please make sure that your Bluetooth device is plugged in properly in order to continue installation.'When I do a hardware discovery in Device Manager nothing is found.The Bluetooth Support Service is running and set to Automatic. anyone faced this issue before?!!Please your feedback is highly appercheated

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