Lenovo T400 / T500 :: T540p Battery Drain In S4 Sleep State After BIOS And Intel WiFi Driver Update

Aug 17, 2014

On my T540p, I configured the rapid start technology according to [URL] ....
Since I have performed a BIOS update to 2.14  and an update of the Intel Wifi driver to 17.0.5, I experience the problem of battery drain when the computer is in S4 sleep state, at a rate of approximately 0.125% per hour (on the 56Wh battery).
This was not the case before these updates. There was no noticable power drain in S4 sleep state, even not over multiple days. I'm using Win7, I set all the WoL capabilities both in BIOS and in the Intel driver to disabled, according to [URL] ....
External device USB charge settings are also fully disabled in BIOS and Power Manager. The problem does not occur when the system is fully shut down, but in S4 Sleep state, which should be a zero-power state too, as it was before the updates. In the details of the BIOS update it is stated " Fixed an issue where the computer might fail to enter sleep state". Could the power drain be a side effect of this fix? Or is it an issue with the (new) Wifi driver, as it was the case for the Y410P?
How could this battery drain be avoided?

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Lenovo T540p T400 / T500 :: Intel HD Graphics Brightness And Sleep Not Working

Dec 4, 2013

So, I just got my shiny new T540p with a 3K display and Win Pro 8 installed. I promptly upgraded to Win 8.1 Pro and now I have a problem with the Intel HD Graphics. Basically, the system will not turn the display on after a sleep and I can't adjust brightness.
I tried downloading the drivers from the support page, but they reference a Intel(R) HD Graphics 5000 card, whereas my system says it has a Intel(R) HD Graphics 4600 installed. When I try to run the driver install anyway, I get a message saying that my system does not meet the minimum requirement for installation (?).
I tried manually installing the Intel(R) HD Graphics Family driver instead. This fixed sleep and brightness control, but then all things 3D was completely messed up (like buttons in Skype and Chrome).

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Lenovo T400 / T500 :: Can't Update Intel 4000 Video Driver On T530

Jan 11, 2015

I been having off and on BSOD issue and I was advided to possibly update my video driver via this site to the latest. The problem is that when I try to update it keep telling me that my laptop does not meet the minimum requirement and it would abort the update.However, I dont get why it wouldn't meet minimum requirement and it doesn't note anywhere within readme file what is the minimum requirement to install this latest video driver.

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Lenovo T400 / T500 :: T540p - Display Inactive After Wake From Sleep Using Windows 8.1

Oct 30, 2014

Windows 8.1, 64bit, all drivers up to date, Nvidia 730m, intel 4600. Fairly new issue (couple of months), laptop wakes from sleep but display does not function, everything seems to be working normally during, just no display. Forced to hard restart.
Just avoiding using sleep mode for now. Seems to be a software issue, upgraded to 8.1 when purchased almost a year ago, worked fine until recently.

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Lenovo T400 / T500 :: WiFi Continuously Drops Out On New T540p

Nov 21, 2014

I have a two month old Lenovo T540p with win 8.1 and a Realtek 2x2 1 1b/g/n wireless Lan  M.2  adaptor that loses the connection to all wifi every 10 minute. The wifi worked fine in the beginning, but after a month and some updates the problem started.
Lan cable works without any problem.
I can always fix the wifi with turning off all wifi ( t. ex. fn+f8)  wait 5 seconds and turn it on again. But after aprox. 10 min. it drops out again.
Every part of the laptop is up to date, even bluetooth driver, bios etc..

I tried another router same result. I tried changing channel on the router.
I tried connecting to a hotspot on my smartphone, same result.
The distance to the router makes no difference.
The Laptop is scanned for virus with Avast free.
I use chrome but tried IE and mozilla with the same result.
I tried to ping the router and it receives no data when the connection is lost.
I tried turning the firewall off, same result.
There no power saving on wifi.
Everything is fine in device management
Maybe its a win8 issue ? Do I really have to format the hd  turn the computer back to beginning and start all over ? This shouldn't happen to a brand new computer.

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Lenovo T400 / T500 :: T540p - Fingerprint Reader Not Working Upon Waking From Sleep For Windows Login

Mar 11, 2014

I have a brand new T540P with a Validity fingerprint reader. 
Rougly 80% of the time, the Fingerprint reader is unresponsive at the windows login screen after waking the computer from sleep. It works 100% of the time when booting from an off position, however. Once logged in, it also works 100% of the time. The issue only arises when logging into windows.
Things I have tried

-uninstalling/installing device in device manager and finger print manager pro software
-setting fingerprints through both fingerprint manager pro software (lenovo) OR through the built in windows fingerprint control panel options
-disabling "allow windows to turn off this device to save power" in device manager.
I should note as well that I have another T540P that I ordered as a replacement. Both models experience the same issue.
Is this a platform wide issue affecting all T540P models?

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Lenovo T400 / T500 :: T540p - Can't Find BIOS Mode

Oct 16, 2014

i cant find bios mode sata menu for ahci i use m.2ssd 256gb i want m,2ssd os boot!!

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Lenovo T400 / T500 :: T430s - BSOD (driver Power State Failure)

Oct 31, 2013

I'm experiencing regular BSODs on my T430s / Win7 when going into sleep mode (Fn-F4). The error message is driver_power_state_failure. This happens almost every day.
I know this is quite a common issue (I also had it with an older T500, but not on T420). After googling around, I've discovered WinDBG and the way to identify the faulty driver that is causing the problem.

However, I couldn't install the tool - neither the debuggers package (referenced from windbg.org), nor the toolset+.NET framework from the Microsoft website. The former keeps exiting the installer without any messages (although Remove Programs dialogue shows the thing installed, there appears to be no program to run), the latter fails to install without any diagnostics (tried installing debugging tools only, tried installing the complete package - same outcome).
So, need to analyzing the memory dump and identifying the faulty driver? Which file is needed for that - the complete memory dump (from /Windows/ folder, ~500 MB in size) or the minidump file (from /Windows/Minidump/ folder, ~700 KB in size)? Or both?

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Lenovo T540p T400 / T500 :: Getting Battery Indicator In Taskbar?

Aug 4, 2014

I just got a brand new Thinkpad T540p. I'm very happy with it, but I miss the battery indicator I had in the taskbar on my older Thinkpads:

 I am trying to get it back/install it, but I keep failing at it. In particular, I have searched around ThinkVantage Power Manager software, found and installed this: [URL]

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Lenovo T400 / T500 :: ThinkPad T540p Battery Manager For Windows 8.1

Sep 3, 2014

I recently bought a Thinkpad 540p and wanted to know a way for stopping the battery from getting charged after a certain level. Its a very common feature to stop a battery from charging say after 80% and run on AC power supply directly.

Other lenovo laptops do support it, under various apps like Energy Manager, or Power Manager but I am not able to find any such options/app on my laptop?

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Lenovo T400 / T500 :: ThinkPad T540p / Unable To Select UEFI / Legacy Boot In BIOS / Startup

Aug 7, 2014

I bought a ThinkPad 540p that comes with preloaded Windows 8.1. As I want to dual boot the machine I tried to select the Legacy Boot option in the BIOS/Startup tab, but I can't do anything as the option UEFI/Legacy Book is greyed out and locked in "UEFI Only". Below it there is an option called: -CSM Support that is also greyed out and selected as [No]. (below  these options there is a little note with an asterisk saying "Unselectable for Secure Boot").
How can I enable the UEFI/Legacy Boot option again in order to dual boot the computer? I want to be able to boot from USB or from the CD Drive.

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Lenovo T400 / T500 :: T440s Windows 7 Pro Loses WiFi Connection After Sleep 7260AC

Feb 6, 2010

I keep having issues waking up from sleep with my T440s.  It WILL NOT connect to wifi and the wireless adapter under windows adapter settings disappears.  Only thing that fixes this is a reboot.  I have removed "allow windows to turn this device off" under wireless settings.
Dated: 28/08/2014
Software: Lenovo Access Connections
I do not use windows to connect to WIFI.  I have dedicated profiles for each of my wifi networks at home and work.

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Lenovo T400 / T500 :: T420 Goes To Sleep On Its Own When In Battery Mode

Apr 11, 2014

I'm facing an annoying problem with my T420. When in battery mode the machine goes to sleep after some minutes. WHILE I'm working on it... But than it is NOT possible to wake it again.

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Lenovo T400 / T500 :: ThinkPad T520 Reconnects To WiFi After Wake Up From Sleep But Web Pages Load Very Slowly

Oct 20, 2013

My Thinkpad T520, Windows 7 Pro takes over a minute to load any webpage  after waking from sleep. The wifi icon shows that the network has connected to the internet after about 10 seconds from wake up. But if I attempt to use a browser to load any webpage, I must wait nearly a minute before the page will load. After that, pages load quickly.
This problem occurs in multiple browsers (FF, IE, Chrome). I am using Intel Centrino Advanced N-6205 wireless adapter. I've updated the wireless driver and BIOS. I've cleaned out my registry using CCleaner, and I've defragmented.
One bit of advice I've read that I've tried from these forums does NOT work: Uncheck from Device Manager under the Power Management tab for my wireless adapater the option to Allow the Computer to Turn Off This Device to Save Power. Unchecking that option (which would seem to keep the driver on) makes the problem worse because the wifi will not reconnect at all.

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Lenovo T400 / T500 :: T440P Crashing When Sharing Desktop - Intel Driver

Feb 18, 2013

After updating to the latest video drivers from the ThinkVantage Update Retriever, our Lync clients crash when sharing desktop on our T440P series and X240 series.  I noticed when I uninstall the video driver I am able to screen share without incident.  Also, if I update the driver from Windows Update I am able to share successfully.  We use the update retriever and thininstaller to install our drivers in our environment.  I have tried uninstalling the Lync updates all the way down to the base version and experience the same issue at every level.  It crashes 100% of the time when sharing desktop.  I have tested it on T440p machines in our environment that do not have the latest display driver, and no crashes occurred.  Here are the specifics:
Thinkpad X240 [20AL]
Thinkpad T440p [20AN]
ThinkVantage Update Retriever 5.00.0007
Thinkvantage Thin Installer 1.2.0010
Intel HD Graphics Driver - gid634ww (
Microsoft Lync 2013 SP1 32 Bit (15.0.4569.1503)
[Code] ......

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Lenovo T430 T400 / T500 :: Can't Install Latest Intel Display Driver

Oct 13, 2013

I am trying to install the latest Intel HD Graphics driver but I always get the message that my system doesn't meet the minimum requirements... [URL]
I have a T430s.
Here is a screenshot of my dxdiag:

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Lenovo T400 / T500 :: Can't Install Intel Rapid Storage AHCI Driver On T430s

Oct 27, 2013

I got a T430s with the nvidia nvs 5400m and when i try to update drivers etc via the lenovo system update I got a message that I should update the Intel rapid storage driver to, and that isn't even the latest version, but anyway I mark the update and let it install and then reboot. But when I search for updates I have to update the same driver to the same version I just installed. I have tried to remove the driver via device manager, but without results.

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Lenovo T400 / T500 :: No Update Available For BIOS In Windows 8.1 For T410

Jul 23, 2014

I want to upgrade my BIOS, but there is no update available for bios in windows 8.1.. My Bios version is 1.18, I want to update because i read somewhere that if your fan make noise make sure you have updated BIOS :A.. I want  to know if I can install "BIOS update for win 8" in my lenovo t410 with windows 8.1.. 

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Lenovo T400 / T500 :: BIOS Update On ThinkPad T420 Takes Too Long

Apr 8, 2014

I think my attempt to update BIOS with a "BIOS update bootable CD" method has failed!
My laptop: Lenovo Thinkpad T420, i5 @ 2.5GHz, 4 GB RAM.
My old BIOS infos (taken from Setup before update attempt):
UEFI BIOS Version       83ET52WW (1.22)
UEFI BIOS Date (Year-Month-Day)         2011-03-24
Embedded Controller Version     83HT27WW (1.11)

I intended to update my BIOS to version 1.46 using "BIOS Update Bootable CD"  from this link: [URL] .....

1) I downloaded this ISO image: [URL] .... and burned it on a DVD-RW(DVD rewritable) medium.
2) I placed the DVD in my T420 and turned it off, then turned it on, select F12 (boot menu), selected DVD to boot from, and the BIOS update utility started.
3) In BIOS update utility I pressed "1" to read the instructions, then press "2" to update BIOS. I clicked "Y" to confirm and the update operation started.  First it said " Now updating... ", then afer about 2 minutes, it said "Still updating ..." and it stuck like this.
So, right now, this message stays on my screen for about 1,5 hours(!!!):

"Still updating...
It may take about a few minutes.
<<< CAUTION >>>
Do not turn off the computer during the update.
Do not remove the CD during the update."
Other details (on system setup and current behaviour): AC was continously plugged in before&during BIOS update, battery is OK,  no hard disk activity at all, keyboard is(seems) unresponsive, system's temperature is pretty high, but not dangerously high...

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Lenovo T530 T400 / T500 :: Boot Failure After Thinkpad BIOS Update

Mar 26, 2014

After the latest system update from Lenovo System update, my laptop T530 doesn't do a successful cold boot. A warm successive boot (with interruptible boot screen) works fine.
But cold boot always fails and the system powers down in less than 5s. This is seen after the BIOS updated to restore to older version of BIOS(downgrade it)?

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Lenovo T400 / T500 :: Copying Data From One T540p To Another

Jun 23, 2014

What's the best way to move everything from my current t540p to the new one? Both have same OS, win7. I was thinking of backing up on USB external hard drive and then restoring?

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Lenovo T540p T400 / T500 :: Can't Change Brightness

Dec 13, 2014

After updating my Thinkpad T540p, I cannot adjust the brightness in anyway. This is a problem because the screen is too birght and eats up battery.
It appears the only way to adjust the brightness is to use Intel HD Graphics, which isn't so convenient.
Fn keys don't work. changing the brightness on the Power Manager settings doesn't work. There is no brightness option on Windows Power Manager.
I have Intel HD Graphics 4600
I have Lenovo Power Manager 6.66.3
Edit: In fact, I think it's posisble that Power Manager to just outright no longer works.

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Lenovo T400 / T500 :: T410 - CTRL Key Does Not Work After BIOS Update To 1.45 (German Keyboard)

Aug 4, 2014

I updated the BIOS of my TP T410 (2522), German keyboard, to 1.45. After the update both CTRL keys do not work any more. The same for AltGr. When I activate the FN CTRL switch in BIOS the FN key - as supposed - works like the CTRL key. But when I deactivate it again the FN gets back to its proper function and CTRL does not work.
When I connect an external keyboard via USB it works perfectly. How to get the CRTL key working again?

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Lenovo T400 / T500 :: T540p - Webcam Doesn't Work

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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Lenovo T400 / T500 :: IE 11 Asks For Windows Password On New T540p?

Mar 11, 2011

My new T540p came with IE 11, and from time to time, I get a bar across the top of the big window where it's asking me to type in my *Windows* password. Not for whatever site I'm on, but my WINDOWS password. My year or so older T440 does not do this, nor does my non-Lenovo work IE11. There's a red cirle in the far right of the bar, with a "voice balloon" with 4 Xs.
The machine is virus free, but why I'm getting this prompt ONLY in the browser.

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Lenovo T540p T400 / T500 :: After Booting Up Often Get A Blank Screen?

Dec 23, 2013

My T540p with Window 7 is experiencing problems starting and shutting down.  After booting up I often get a blank screen where just the moused pointer is displayed.  I have to hold the power button down to shut down and then try again.  Sometimes it takes 2 or 3 goes to boot-up.  Quite often when I shut down Win 7 The desktop icons disappear but the desktop background continues to be displayed and the notebook doesn't shut down. 

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Lenovo T400 / T500 :: Installing Windows 7 64bit On T540p?

Jul 3, 2014

I bought a  T540p.  It came with windows 8.  I tried to install windows 7 pro 64 bit. It now hangs on the starting windows screen and I can't get to the desktop. how I can get it to work?  Are there any bios settings that need to be different for windows 7?

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Lenovo T400 / T500 :: Memory Upgrade On Thinkpad T540p?

Aug 15, 2014

i have purchased an 8 gb Kingston Ram module ( KTL-TP3CL). My plan was to upgrade my thinkpad T540p with 12 gb of ram. My configuration is ( i5/4gb ram/hd 4600/W7 pro/500gb hdd). The thing is that I am  having second thoughts about having two modules from a different manufacturer and of different capacity.

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Lenovo T400 / T500 :: T540p - Creating Extended Partition

Aug 23, 2014

I've just bought a t540p thinkpad and started migrating to the new machine with my all stuff from the old one. Unfortunately I've encountered a problem which I cannot resolve by myself.
I've got preinstalled Windows 7 which came with 2 partitions for itself - system_partition and os_files. After them there are 2 more primary partitions: Lenovo_Recovery and hibernation partition for 30-day standby.
I really want to rearrange these volumes so I can divide the files betweend OS C: partition and D: partition for my data. The problem is that there are already 4 primary partitions at this disk which is the limit for MBR so I can't create any more.
I've tried to boot up a linux mint live usb with gparted, but the system didn't start. Probably some UEFI issues which I cannot afford to deal with now.
So my disk looks like this at the moment:
- system_drv - 1,46 GB - system, active, primary
- os - 60 GB - bootable, pagefile, primary
- unallocated - 154,25 GB (space for D: partition which I got from shrinking OS partition)
- lenovo_recovery - 15,76 GB, primary
- (no name) - 7 GB - hibernation partition, primary
So, is there any possibility to change the volume with OS partition to the extended one and create second logical partition for my D: partition? Or maybe there is a way to change hibernation partition to the extended one?
If both options above are not possible I would be grateful for specifying the steps to fully disable the 30-day standby so I can delete hibernation partition (however the 7 GB at the end of disk will be unused then because I still won't be able to attach them to C: or D: partition). I assume that simply unchecking the option in the Global Setting of Lenovo Power Manager won't be enough.

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Lenovo T400 / T500 :: New T540p - Numlock Warning At Login

Feb 5, 2014

I have a new T540p and I have an issue with numlock when logging into the computer.  (This is NOT the numlock on-screen display icon).  Basically, whenever I get ready to type my password in the login box, it brings up a warning that my Numlock is on and that "your password may be entered incorrectly".
I understand the need for this warning on keyboards without a separate numpad, but my T540p has a full-size keyboard with a separate numpad PLUS I am using an external keyboard.  This error comes up both with and without an external keyboard.
This wouldn't be a problem except that this warning is especially aggressive and never in the same spot twice, and will sometimes even entirely cover the username AND password field with an ugly black box.
BTW, this is Windows 7 Pro (purchased downgraded from Win 8). I just can't figure this out, it's gotta be something with the Lenovo software but I can't find it.

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