ThinkPad Yoga S1 - Windows 10 unknown device

I did a clean installation of Windows 10 on my ThinkPad Yoga S1. After onstalling all drivers I still get followig device missing in device manager:
Unknown Device:Device Type: other devicesManufacturer: unknownPlace: Synaptics SMBus Driver I already installed Synaptics ThinkPad UltraNav Driver 19.0.12.61 from 7/30/2015, so this does not change anything here. What driver is missing and can Lenovo provide it soon?

Also have an S1 with non-functioning palm rejection. The pen worked earlier, but now it no longer functions. It works in that it can calibrate itself in Wacom Pen settings, but otherwise refuses to register. UPDATE: restoring default settings under Wacom Pen settings has reenabled the pen and palm rejection appears to work again. Note: I installed recent Wacom FEEL drivers, which are the drivers that work with this model, among other tablet PCs with Wacom tech.

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Issues with Thinkpad yoga on Windows 7 64-bit

I uninstalled the windows 8.1 that came with my Thinkpad Yoga to installe windows 7 64-bit because there was no support for Power Manager ( a tool that allows you to charge your battery only upto a certain percentage (eg 40%) which helps reduce battery aging when the notebook is mostly operated on AC power).
Doing that required me to fully clean the Hard-disk during the installation process.
I installed almost all of the drivers available on http://support.lenovo.com/us/en/products/laptops-and-netbooks/thinkpad-yoga-series-laptops/thinkpad-...
for thinkpad yoga and windows 7 64 bit.
Happily, this provided me the Power manager, and I can use it just as I wanted.
However, all these has brought in additional issues which are listed below:
1. The touch pad right click doesn't work. Only two finger tap works as right click.
2. The touch pad gestures for zoom and scroll doesn't work at all.
3. The screen auto-rotate doesn't work.
4. The touch screen gesture for zoom doesn't work.
I did install the ultra-nav and screen-rotate drivers, but I get error messages regarding synaptics ... not working and also sensor driver not working during the windows startup.
Any help please?
Thank you.

Just when I was happy that major issues have been resolved by constant updating, I am now experiencing this frightening problem. Mostly during startup, and lately in the middle of working, the screen freezes, shows very damaged image (like TV noise), produces the most unpleasant sound through the speakers and nothing works. I need to restart and hope that it will be ok. Sometimes it requires 2 or 3 restarts, going to safe-mode and returning back to get the issue resolved.
This has happened three or 4 times within 24 hrs. I searched in the forum and for another model it was suggested that epresscache might be the cause. I disabled the service, but the problem reappeared even then.
Any help please:
This is what appears on the screen when the computer freezes and produces loud unpleasant noise sound.
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Unknown device in device manager after win8.1 upgrade W540

I'm using the W540 with an ultradock and external monitors. After upgrading my W540 to win8.1 64 bit, device manager is showing an unknown device. I'm not quite sure what it is, but almost everything seems to be working fine and Lenovo solution center isn't finding any driver updates.
I did notice that the solution center hardware scan did not test the video card memory and listed that test as N/A. Video and monitors seem to be working fine though and both nvidia and intel graphics show up in device manager.
Device manager lists the device in question as follows:
Device instance path: ROOT\SYSTEM\0001
Hardware Ids: root\iwdbus
Device stack: \Driver\PnPManager
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This seems to fix the problem.. any idea why?
http://forums.lenovo.com/t5/W-Series-ThinkPad-Laptops/W530-unknown-device-after-installing-windows-8...
(In device manager - Right click, uninstall, scan for hardware changes)

Unknown Device in Device Manager for Lenovo G780 laptop, Windows 7

Hails all. I am trying to figure out what the Unknown Device is under Other Devices in my Device Manager. I recently got rid of Windows 8 and put Windows 7 64-bit on my Lenovo G780 laptop. I installed almost everything from the Lenovo site --- all of the drivers and such, software, etc. I cannot figure out what this device may be. The only external device connected to the laptop is a Kensington usb mouse. Any ideas?
I did run the PCI test program and the Motherboard test program that Lenovo provides and it didn't find any errors. Windows Update hasn't found update/driver/software for the Unknown Device. The Lenovo Solutions software only tells me to open Device Manager.
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Welcome to the forum!
Since Windows Update didn't pick up any missing drivers, I'm guessing you are missing a driver for a device that would be propriatary to Lenovo. During the installation of Windows 7, did you install the One Key Recovery software ? If not, the One Key Recovery button maybe triggering that exclamation mark in Device Manager since there is no driver to tell Windows what to do with that button.
If that wasn't the problem you can try running Unknown Device Indentifier to see if that utility can indentify the unknown device. The free program can be found at the link below........
http://www.zhangduo.com/udi.html
OR
Use the Direct Download link at...........
http://download.cnet.com/Unknown-Device-Identifier/3000-2086_4-42618.html
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ACPI\VPC2004 Unknown Device - Lenovo g560 windows 7 pro. x64 installed

I just bought Lenovo g560. And installed windows 7 pro. x64 and installed drivers from driver cd shipped with laptop (windows 7 drivers). After installed all drivers still I had one device unknown ; device id = Acpi\Vpc2004. In the Windows 7 solution center, there was message about download energycut and install. I downloaded and install energycut. But nothing changed and power management option program not working too.
I googled so much and couldn't find any solution.
+++
Actually there very interesting situation, there is any driver or support about lenovo g560 on lenovo global support site. And auto detect is not working too.
Did I made mistake to buy lenovo instead of thinkpad???
If somebody have solution about this acpi\vpn2004 driver please help.
Because like that when sleep or lid laptop not waking up.
After hibernate and start computer, having blue screen and system halted message. until start without resume system.
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I googled this: "ACPI\VPC2004 Unknown Device"
Third hit was THIS at another Lenovo forum.
Is this your solution?

G555. Need drivers for SM Bus and another Unknown device for Windows XP.

I try to install Windows XP on my G555. I got all other drivers, but cannot find drivers for SM Bus and an Unknown device. And what's this device?
The second problem is that after I installed all the drivers, the card reader disappeared. It was there after I installed Windows XP, before I install drivers.
Thanks a lot.
A Simpleguy
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Hi Simpleguy,
Welcome to the forum!
In thinkpads, it's usually intel chipset driver. For AMD based G555, I wouldn't be surprised if this is the driver you need:- http://consumersupport.lenovo.com/us/en/DriversDownloads/drivers_show_2476.html
As for other unknown device, find it's PCI ID with any other known information and paste here.
Hope it helps.
Maliha (I don't work for lenovo)
ThinkPads:- T400[Win 7], T60[Win 7], IBM 240[Win XP]
IdeaPad: U350
Apple:- Macbook Air [Snow Leopard]
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Unknown devices - New installation Windows 7

Hi guys,
I have an SL510 thinkpad and I have just installed windows 7 professional 64x. I noticed my wifi not working and in Device Manager there are a number of 'Unknown Devices' I have 3 'Base System Device' alerts, a 'Network Controller' alert and an Unknown Device....
The Hardware Ids are as follows:
PCI\VEN_197&DEV_2384
PCI\VEN_197&DEV_2382
PCI\VEN_197&DEV_2383
PCI\VEN_8086&DEV_0084
ACDI\IBM0068
I have tried installing several WLAN drivers to try and get my wifi working but no good. Any help would be greatly appreciated...
ndolly2912
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Good day and welcome to the community.
From http://www.pcidatabase.com/index.php
Device Id Chip Description               Vendor Id Vendor Name
0x2382     JMB38X SD/MMC Host Controller 0x197B     JMicron Technology Corp.
0x2383     JMB38X MS Host Controller      0x197B     JMicron Technology Corp.
0x2384     JMB38X xD Host Controller      0x197B     JMicron Technology Corp.
0x0084     Intel Wireless Link WiFi 1000 0x8086     Intel Corporation
First three = Card reader
- http://support.lenovo.com/us/en/products/laptops-and-netbooks/thinkpad-sl-series-laptops/thinkpad-sl...
Fourth = WiFi
- http://support.lenovo.com/us/en/products/laptops-and-netbooks/thinkpad-sl-series-laptops/thinkpad-sl...
From http://support.lenovo.com/us/en/documents/ht004905
ACPI\IBM0068 is probably the power management driver
- http://support.lenovo.com/us/en/products/laptops-and-netbooks/thinkpad-sl-series-laptops/thinkpad-sl...
For reference, the SL510 main support pages:
http://support.lenovo.com/us/en/products/laptops-and-netbooks/thinkpad-sl-series-laptops/thinkpad-sl...
Does this help?
Regards.
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ThinkPad Yoga Synaptics TouchPad Error msg on Windows 7 startup and loss of gesture functions

I fresh installed Windows 7 Ultimate on my ThinkPad Yoga after getting fed up with windows 8.1. I now get the following error msg on each startup and the trakpad features do not work:
"synaptics touchpad 64-bit enhancements has stopped working"
I can use the mouse but non of the gestures work. I have not been able to find any other posts with similiar issues on the Yoga so any help on this would be most appreciated. The device driver installed was taken from the lonovo site and is the "Synaptics ThinkPad UltraNav. Version 18.0.7.34 (N10GX08W)"

Just when I was happy that major issues have been resolved by constant updating, I am now experiencing this frightening problem. Mostly during startup, and lately in the middle of working, the screen freezes, shows very damaged image (like TV noise), produces the most unpleasant sound through the speakers and nothing works. I need to restart and hope that it will be ok. Sometimes it requires 2 or 3 restarts, going to safe-mode and returning back to get the issue resolved.
This has happened three or 4 times within 24 hrs. I searched in the forum and for another model it was suggested that epresscache might be the cause. I disabled the service, but the problem reappeared even then.
Any help please:
This is what appears on the screen when the computer freezes and produces loud unpleasant noise sound.
Link to image
Moderator note: large image(s) converted to link(s): About Posting Pictures In The Forums

[Helix gen2] Clean Install of Windows 8.1 - one unknown device left

Hi,
I did a clean install of win 8.1 with the suggested procedure (System Updater, Solution Center)
Unfortunately, there is one unknown device left in the device manager:
Intel(R) Serial IO SPI Host Controller - 9CE5
ACPI\VFSI6101\1
which I thought could be solved by this driver:
http://support.lenovo.com/us/en/products/laptops-and-netbooks/thinkpad-helix-series-laptops/thinkpad...
But without success. So could anyone help? Which is the right driver? Or what should I do?
Thx Ralf
Moderator comment: New thread created. Subject edited to match. Was: Re: Lenovo Helix - Clean Install of Windows 8.1 - Best way to load Software and Drivers
Solved!
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Good day and welcome to the community.
I found a few vague references of VFSI6101 being related to a Validity Fingerprint Sensor.
Looking at the Helix Gen2 driver pages: http://support.lenovo.com/us/en/products/laptops-and-netbooks/thinkpad-helix-series-laptops/thinkpad...
and specifically at the FPR software package page:
http://support.lenovo.com/us/en/products/laptops-and-netbooks/thinkpad-helix-series-laptops/thinkpad...
there's a reference to: "Synaptics FP Sensors(WBF) VFS6101". Pretty close!
So you might try that to see if it clears up the orphaned device.
Hope this helps a bit.
Regards.
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X1C3 Helix X220 X301 X200T T61p T60p Y3P • T520 T420 T510 T400 R400 T61 Y2P Y13
I am not a Lenovo employee.

No HDMI sound Windows 10 Thinkpad Yoga 12

No HDMI sound in Windows 10 on Thinkpad Yoga 12. Shows not connected in the sound panel, only video transmits over HDMI but soud plays throught speakers as it does not detect the audo link.

Update: I managed to fix it by using what brillat described here. "The HDMI Audio drivers, for whatever reason, are not installed when you install the Intel video driver. You know they are missing if in your device manager under "Sound" you see "High Definition Audio Device" - you should instead see "Intel(R) Display Audio". Download the video drivers from Lenovo. Extract but do not install. In the extracted folder, find the DisplayAudio folder. Find the "High Definition Audio Device" with PCI ID Vendor 8086 and Device 2807 in Device Manager. Manually update the driver of that device, pointing it to the DisplayAudio folder."

Windows 10 killed my Thinkpad Yoga 14's keyboard

That's good to hear.
At this point, how these legacyish and low-level BIOS updaters interact with the brand-new and really different Windows 10 is unknown. That and especially in cases where Windows is buggy or unstable, it's safer to use a bootable option.

Did you update your BIOS before upgrading to Windows 10? There's an entry that vaguely says "Core update to supprot windows 10."
http://support.lenovo.com/us/en/products/laptops-and-netbooks/thinkpad-yoga-series-laptops/thinkpad-yoga-14/downloads/ds101225
At this point, I'd recommend using the bootable ISO instead of flashing from within Windows:
http://support.lenovo.com/us/en/products/laptops-and-netbooks/thinkpad-yoga-series-laptops/thinkpad-yoga-14/downloads/DS101227
Which you should be able to put on a flash drive instead:
http://www.thinkwiki.org/wiki/BIOS_Upgrade#Booting_from_a_USB_Flash_drive

Equium L10: Windows Vista Beta2 - unknown device

Hi
I have a Toshiba Equium L10 with Windows XP loaded as default but I installed VISTA Beta2 "public release" on it and given that it's only a 1.5GHz Celeron CPU with 512MB RAM, it ran extremely well but, I have one problem which I am hoping that I can get help with from the users in this forum and especially those who have the same/similar Equium model as I have?
Ok, after installing VISTA I checked in Device Manager and noticed "Unknown Device". After checking out the info given in it's properties, I have detailed it below:
Location: Microsoft ACPI Compliant Embedded Controller
Value: ACPI\ACPI 0001 * ACPI0002
When I re-installed XP again, I went to Device Manager/Batteries/Microsoft SMART Battery, the entry for Microsoft SMART Battery Subsystem has "ACPI\ACPI0002\6&28CA2229&0".
Notice the "ACPI0002" info given for the 'unknown device' in VISTA is the same info given for the "Microsoft SMART Battery Subsystem" in Windows XP. So I am left wondering if the unkown device under VISTA is the Microsoft SMART Battery Subsystem and if so, why did VISTA not install the driver for it?
Can anyone help with find a driver for the "unknown device" in VISTA?
Regards
Brave

Hi
The unknown device appears because the driver is missing.
Unfortunately, at this time you will not find any Toshiba supported drivers for the Windows Beta2. This is a beta version and not official on the market.
I think if this OS will be official supported so you will also find the needed drivers.

Windows needs to install driver software for your unknown device

Windows needs to install driver software for your unknown device
This is the message that i get when ever i plug in my ipod touch to my computer. the computer is running on vista. i dont know what to do, because i tried to follow the steps suggested, but it didnt work, the computer said that it couldnt find anything and to check with apple for some driver software. HELP!!!

The iPod touch and iPhone do not use the same type of USB drivers that other Apple devices use. They both require Apple Mobile Device Services to be running. Using this tech article as a guide, you can easily fix this: http://support.apple.com/kb/TS1567

Unknown Device ipod Classic and Windows Vista problem??

Help!! My ipod Classic is not being recognized by my computer. I have read the previous articles and tried the solutions but I continue to get the result "Windows has determined that the driver software is up to date" I continue to get the error noise when I plug the USB in and the Device manager continues to say "Unknown Device" It seems others are having this problem, how do I fix this?

I am having the same trouble with mine, and I can say that it isn't iTunes, I plugged my brothers iPod Nano in and it worked like a charm, but when I plugged my iPod Classic 160g in all it says is it is an "unknown divice". It isn't Vista either as the same thing happens on XP Pro as well, so all I can think of is it is a error on the Classic itself. I just wish someone can help out so that I can use my ipod!!!! Come on Apple!!!! Solve this problem!!!!

Unknown device - ipod nano fine - problem with windows xp and usb root hub

Greetings all. I've seen this question come up over and over again and have been working on it following previous posts and posts on microsoft and hp sites for a couple of days now.
First off - the ipod nano is fine. Works on my son's computer well.
When I plug it into my 6 months new HP Pavilion laptop it says: 'found new hardware' and goes through the process of installing it, says it's been installed, but then shows 'unknown device'. In Device Manager it tells me there are no drivers installed, but when I try to follow the other instructions on this forum to update the drive to USB mass storage device (usbstor.inf), it tells me the best driver is installed and won't do it.
Many seem to have this problem with devices other than the iPod on Windows service pack 2 so I went to the Microsoft forums and they seem just as puzzled. I've updated all my Windows & HP software to the latest possible versions. The problem is definitely in the USB. Once, when I uninstalled the USB device and then rebooted the computer with my iPod still plugged into the port, it found my iPod, correctly identified it, and for a blissful moment I thought everything was fine! Then it reinstalled the USB drivers and made a comment to the effect that I should move the iPod to a USB 2.0 port for more effective operation and the iPod disappeared again.
I have 3 USB ports on my laptop, all are USB 2.0 and all 3 have the same problem.
I've tried all the stuff people have already said on here...does anyone have any NEW ideas? I'm hesitant to take it in for service because it seems to be a software problem that should be fixable.
Thanks in advance for your help and sorry about the long post.

This isn't a solution, but it's something I just tried and it may provide someone additional clues about's going on. I too think this is some sort of USB problem.
I have 6 USB ports. Two of them are USB 2.0. Since I applied the 03-23 update my computer hasn't recognized my nano at all. I would connect my nano and I couldn't get it to show up in My Computer, in iTunes, or on the far right side of the Start taskbar.
I just tried plugging my nano into the first USB port of my USB 2.0 pair and left the second 2.0 port empty. I then rebooted with the nano attached. Viola - I get a "Found New Hardware Apple iPod USB Device" message. My nano is now flashing "Do Not Disconnect." A small removeable storage icon with green arrow now shows on the far right side of the Start taskbar. If I click on it (like you're going to eject it) the note displayed says "Safely remove USB Mass Storage Device - Drive (F:)".
If I go into My Computer, "Removeable Disk (F:)" now shows there. However, if I try to follow Trevor's instructions in another post to "go into My Computer with iPod connected, right click it, wait till the right click menu comes up (could take a few minutes); click Format, . . ." I'm stuck. I do the right click, watch the hour glass and wait for the Format menu to come up but it never does. Eventually the hour glass just goes away. No message, no Format menu. The waiting hour glass just goes away.
My computer isn't as new as yours, but like you I am completely current on maintenance.
I'm going to keep trying . . . If anyone has any ideas, please let me know.
Dell Dimension 8100 Pentium 4 Windows XP Service Pack 2 Phoenix ROM Bios PLUS Version 1.10 A09

ThinkPad Yoga S1 - Windows 10 unknown device

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