Lenovo T400 / T500 :: T420s Wireless Radio Button Doesn't Switch On / Broken
Dec 18, 2014
I have a Lenovo t420s with dualboot win7 and Ubuntu. I never had any problems until now and could switch on/off my wireless and bluetooth connections via the Hardware Switch (right bottom left of the notebook) or via FN + F5.
However, without any specific reason the wireless and bluetooth was switched off and the the system tells me that I have to switch on WIFI via the Wireless Radio Switch. However, although I can move it, it doesn't make any difference for the Switch.
I tried to reset the BIOS to Default and changed the network settings, and also rebooted several times. I won't work with any of the two systems.
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Aug 2, 2014
I have a t420s and so far I'm happy with it.Recently I purchased a MC7700 card from ebay with lenovo FRU. Everything looks smooth except that I found there is no way to turn on the mobile broadband switch.i believe I have a whitelist-removed bios otherwise it won't boot. The driver downloaded from lenovo website is installed fine, I can see the card working in device manager. I could read the iccid in windows network settings. Everything looks good, but I just can't turn mobile broadband on.
My laptop runs windows 8.1, I heard there is a thinkvantage connectivity tool that might work for windows 7 but not windows 8. I have quite a few files on my laptop and going back to windows 7 is the last option I would like to try.
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Jul 5, 2013
Is there a way to turn on or off the wireless/bluetooth radio when the T420 is docked and using an external keyboard? I don't want to open the lid on the T420 every time to use the Fn+F5 keys when docked.
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Jan 3, 2012
I want to run a Virtual PC in VirtualBox and get the message, that I need to enable VT-x. I have updated to the newest bios (1.31) but i still don't have the option to enable "Intel Virtualization Technology" under the Config --> CPU menu.
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Nov 16, 2013
We installed a Kinston 240 GB SSD in the Ultrabay, and it is not fully recognizing the SSD - it does not show up as a device, though we know the machine knows it is there, and we could use Linux and ghost to it..
We then ghosted to it with no issues. We then put it in the main bay, but it would not boot.
We looked at it from the USB port of another computer, and the files looked fine. Are we missing a driver?
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May 29, 2012
Lenovo T420s is randomly crashing. There is nothing special in the Event Viewer. Only that the PC was not turned off properly. Not exactly BSOD.
Error video on YouTube
Usually happening under some load (eg. game) but I have seen the same running only MS Office. No Macros or special calculations.
I would say this happens due to overheating. This is my second T420s I have same problem with. I work as 2nd. lvl IT so I know other colleagues are experiencing the same.
Frequency decreased once performance settings in power management were switched to balanced mode. Not solved though.
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Feb 14, 2013
I installed Windows 8 x64 recently and installed all the drivers. I was pretty sure that all the devices were installed.I was having a hardware power management problem before installing Windows 8 that I was hoping was a software issue that reinstalling the OS would fix. Turns out it wasn't software, but had to have the main board replaced under warranty. Even after the main board replacement, I was still pretty sure I saw all the device drivers were installed under device manager.
I'm noticing an "unknown device" listed that doesn't have a driver installed. I know often these can be the TPM or other system device, but I have the TPM installed as well as the chipset software and power management driver. But there is still this unknown device.The only clue I have as to what the device could be is under details, the "hardware ids" property value is "rootsscbfs_storlib_bus3". A Google search brings up nothing for this string. "STORLIB" makes it seem like it has something to do with storage, but I have the Intel RST driver (11.7 from Intel) as well as the card reader driver installed. I can confirm the card reader is functioning fine too.
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Jun 7, 2013
I have a T420s that I bought a couple weeks earlier, it's a used one, so there's no warranty with it, I used it several days without any issue, I don't use it very frequently as I use my corporate one most of the time.
Someday when I wanted to turn it on, it stacks on a black screen and it beeps one beep then two other, nothing showing on the screen not even the thinkpad logo at startup, I thought it was a RAM related issue so I put the one from my corporate PC but without any luck, so I wanted to see if its graphic controller issue, I plug the VGA cable on the laptop and my TV and here I can see the thinkpad startup logo but after that I see a message on the screen telling :
"Real Time Clock Error - Check Date and Time settings. Press Esc to continue or F1 to enter setup" and when I press either one nothing happen at all, still stacks there.
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Dec 10, 2013
I need to do a recovery on a T420s. I want to recover to same state as out of the box. I already backed up all the data. I am using the disc provided by Lenovo but cannot seem get the disc to start the process. I think I set the DVD as the first boot device but it goes right past it and into the normal start up process.
Is there a way to start the process besides from boot up?
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Aug 21, 2014
My 5 months old SSD crashed and I replaced it with a Macrium created mirror. Everything seems to work except the computer no longer recognizes USB drives. The USB drives are good (checked on other devices), I've removed and reinstalled all USB hubs and drivers - the chip drivers and bios are up to date and the USBs are enabled in the BIOS AND I've done several virus scans (online and local) in safe mode (Malwarebytes, Spybot, ESET, Defender, AVG, Housecall). The USBs are recognized on boot but once Win7 boots the USB for storage devices no longer work.... however, the USB recognize keyboards and the mouse. Guessing a new OS install will fix it, however, I would rather not reinstall everything.
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May 26, 2011
I bought a Roline DP to HDMI cable hoping to be able to watch HD content in my livingroom and not having to plug an extra audio cable as DP should carry sound too.
When I do the same as on the youtube video, I get the following settings in the control panels: [URL] ....
But there's no sound coming out of the TV. I've tried it on my SyncMaster PC/TV Screen and on my Samsung TV in the living room. On the TV in the living room, the windows audio manager shows the device, but it cannot be selected as show above. It stays grey.
I've got a T420s with discrete nVidia Optimus graphics (Quadro NVS4200M). Driver version is 1.2.19.0 for nVidia HD-Audio and 8.17.12.6696 for NVS 4200M. This information comes from the device manager. I installed my system from scratch and used ThinkVantage System Update 4.
Where the problem comes from? I could only imagine that the cable isn't capable of carrying audio, but that seems rather illogic, does it?
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Aug 20, 2009
I have just installed Windows 8 onto my T510i but I am unable to control the Bluetooth Radio. It seems to be constantly on.
If I press FN+F5 nothing happens (not even flight mode)
I have downloaded and installed all the drivers and software that I can from the Lenovo support website. Is there any thing I can do so that I can turn the Bluetooth radio on and off....
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Jul 19, 2013
I have been running ubuntu on my T420s for about 2 years now. Needed a Windows box to work from home so I installed Windows 7 Home Premium - Service Pack 1 on it. Installation went smooth but Windows did not recognize my wireless card, preventing me from connecting to the internet to download and install the rest of my drivers. I tried to manually install the Intel Wireless Lan (bg, abg, abgn) for Windows (64-bit) Centrino Advanced-N 6205 which is what I thought was installed on my machine to no avail.
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Jun 13, 2008
Audio stutters when using bluetooth connection to my BOSE speaker (from Spotify). Has started lately. Cable works perfect. I use Thinkpad BLuetooth 3.0 version. Conexant 20672 Smartaudio HD.
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Aug 28, 2013
Several times a week, my bluetooth mouse will freeze. I can still use the touchpad or the red dot. Fix is to Fn+F5 and stop and start the bluetooth radio. Looking in Lenovo System Update, I can see the Bluetooth driver is a recent install and is version 6.5.1.4500 for Windows 7 [32/64].
Mouse is Targus bluetooth mouse, model: AMB09US
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Jun 23, 2014
I got T510. The display went out and all I can see is flickering screen so I cannot see anything. I am getting T540p. What is the best way for me to move data from my hard drive to the new one? At least I would like to move pictures and documents, I got no backup.
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Jun 25, 2011
My wireless card stopped working and I get the message that the radio is disabled. F2 is supposed to turn it on,but no longer does so. Tried reinstalling the wireless card driver, but that didn't work. I am told that I probably have a software conflict. How to find and correct the conflict?
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Oct 16, 2014
I have the Lenovo T440p model.
First is while I'm docked in at work I use a normal key board and it has a right click botton on it. When I go home I do not have that button and know for previous models there is a short cut that you can do to "right click" rather than going to the track pad and right clicking.
Second is for the F1, F2, F3, etc... to work I have to hold down the Fn button. Is there a way to turn around the keys to where when I hold down the Fn key and press F1 it actually mutes the sound. I guess im trying to say is there a way to switch the primary function of the F row?
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Apr 4, 2012
When I press the ThinkVantage button it does not do anything, brand new computer. Is it normal?
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Oct 23, 2014
I'm having a problem after upgrading my t500 to windows 7 ultimate 64bit.
The volume buttons work fine (even without the hotkey software installed), but the mute button and the on screen display doen't work.
While I can live without the OSD, the lack of a mute button is really bothering me.
I have the power manager installed as well as the hotkey software. not sure if this has anything to do with it but UltraNav is also installed.
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Jan 7, 2015
I'm tried hard-booting the device, but no dice. When I push the power button, I show activity in the status lights and can feel heat coming out of the heatsink. I think I see the 'ThinkPad' screen displaying very faintly at that time, but it seems not to proceed through the regular boot process. I'm definitely not able to get to a BIOS post.
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Mar 15, 2014
How I assume the switch between headphones and speakers should work: I turn on music or anything esle and if no headphones are plugged in, every sound comes from the internal speakers. Now if I plug in headphones then the sound comes exclusively from the headphones. If I pull then out again the sound comes from the speakers and so on.
In my case the situation is the following: If I have no headphones plugged in and turn on music, then I hear if via speakers. If I decide to continue listening to that music via headphones and plug them in, then the music continues to come from the speakers, but for example the notification sound from outlook comes from the headphones. This works vice versa.
If I open, say youtube to watch a video, while having the headphones plugged in, I will hear the sound via them. If I now unplugg them, the speakers will stay silent.
What can I do that if there are no external speakers plugged in (headphones etc.) every sound will be played by the internal speakers, if I plug in some sort of external speaker it comes from them and if I unplugg it it switches back to the internal speakers?
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Jul 11, 2014
Just to clarify, my laptop is a Lenovo ThinkPad T420i, Type 4178. It is about 2 years old. I have Windows 7 64bit.
My laptop takes about 2-5 minutes to switch on, sometimes it doesn't turn on at all. The screen freezes every 15 seconds or so, but I am still able to move my cursor around. It also lags quite a bit. For example, typing 'how to download google chrome' will take me sometimes an entire minute, because only parts of the sentence will show up on the screen at a time. My keyboard is responding fine. The problem is not with the wireless internet, because even when the wireless is off the laptop is still unbelievably slow. Watching videos is impossible, because the screen freezes so much.
I have been having this problem with my laptop's performance speed for about 2 months now. I had it completed wiped back to factory settings, downloaded every malware and virus scanner known to man (none of them found any problems with it) and updated all my drivers.
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Dec 14, 2013
I've been trying to get bluetooth to work on this laptop. I upgraded the latest BIOS, checked the I/O ports page for BlueTooth, and there was nothing there. I scanned hardware for changes in Windows XP, nothing is there. I installed the BlueTooth software from Lenovo, still nothing. I have Access Connections and Productivity Software installed, and I when I bring up the Access Connections via Fn+F5, there is only the 802.11 wireless radio. I did check the product quick path page for this type and model, and it seems that BlueTooth is supposed to be on this machine.
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Mar 12, 2009
I have an SR290 and recently I had a problem with the wireless. The wireless switch at the bottom left corner does not seem to work; when I move it to the ON position, the LED does not light up green to say that it is working. In the Device Manager, the wireless device does show up, and I can disable/enable it, and it indicates that the wireless card is still functioning. Under network connections, the network connection does show up, but it cannot detect any wireless networks. My other devices can pick up the wireless signals.
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Jan 19, 2014
I got a new T440s about 2 weeks ago and sometimes it doesn't wake up after it goes into sleep mode. It gets stuck on a black screen and the mouse cursor is visible, but moving the mouse or pressing keys on the keyboard fails to wake it up. When this happens, I have to restart the computer by holding down the power button for 10 seconds. I am running Windows 7 Professional 64 bit and hybrid sleep is off. I'm just really confused because sometimes it wakes up perfectly and sometimes it doesn't.
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Sep 15, 2014
I have the T540p and the webcam doesn't work at all. When I try using it in Skype and Adobe Connect, I just get the camera icon with a slash through it. I've read in other forums that uninstalling the webcam driver and reinstalling it doens't work. I really need the webcam to work so this is pretty urgent for me.
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Dec 23, 2013
Have been trying to upgrade my T410 running Win7 SP1 64bit from 2x2GB to 2x4GB RAM (KVR13S9S8/4, Kingston ValueRAM 4GB SO-DIMM, 204Pin, DDR3-1333MHz, 4GB, DDR-1333 (PC3-10600), CL9, 204-Pin) but Windows doesn't start with this memory.
The weird thing is that the PC boots and i can enter the BIOS and can see the 8GB installed, but Windows 7 hangs at the startup screen and never comes up. I first thought of defect in RAM and have requested replacement from vendor, but same issue with new RAM modules.
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Sep 11, 2014
My T420 doesn't power on at all. I have tried to turn it on with cable, w/o cable, different baterries, removed rams and tried same things, tried holding down power button for 60 secs, tried with an other keyboard and I couldn't manage to start the laptop. No reaction at all, no blinking or anything.
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Aug 7, 2014
I have a T530 with an SSD, less than a year old, that appears to be bricked ... when the power button is pushed, there is absolutely no noise (no fan, no beeps) and no indicator lights.
I'm having trouble getting the "what happened" story out of the user but I heard something like "the battery ran out and now it won't start". I suspect some improper behavior like hauling the machine around when it was "sleeping" (not off) but that as they say is another story.
Elsenet I saw the following "one weird tip" to discharge static buildup (*)
* unplug power
* take out battery
* take out RAM
then a sequence where you pushed the power button 9x and on the 10th time held it for 30 seconds. Then plug power in and try again. No soap (although the ram is internal, not in the expansion slot, so I haven't disassembled the keyboard area to check).
I also unplugged the battery/power and held down the power button for one minute - still no luck
Swapped out power supply and battery - no luck
Only indications of "life" are the little battery icon on the top of the case (e.g. when computer is closed):
- Battery not installed - put power cord in, icon flashes green 3x, stops, but power button does not turn on
- Battery installed - put power cord in, icon flashes green 3x, flashes long orange 1x, flashes short green 1x more
Is there something else I can try or is this a "Call IBM/Get this guy a loaner"?
* laptop appears to be staticy, I have gotten a couple of "snaps" off it, and that doesn't regularly happen
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