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yoga 910 USB-C forward port stopped working

Q: yoga 910 USB-C forward port stopped working

Hi, I am a teacher and need to connect at school to a HDMI cable. I use a USB-c to HDMI dongle. As many, I had issue with my USB-C port since I purchased my Yoga 910. (turn on and off and hard to connect) Recently however, the port just stopped working. I believe it is dead. I tried to find documentation on how to repair it or investigate but could not find any informations. Can I do anything to confirm that? Is there anything I can do to repair it? Is the next step to bring my laptop to a Lenovo service center? Thank you for any help!

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Preferred Solution: yoga 910 USB-C forward port stopped working

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Hi, I have a Lenovo Yoga 910 that was working fine but then, suddenly, the forward usb-c port stopped working. Tried to reinstall and update USB driver, no results. I checked if the problem was with my adaptors but it is not, a friend of mine has the same laptop as mine and it is working. Does anyone have any suggestions? Thanks

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Ok, I want to be able to host games on Warcraft Online, but it seems im unable to do that becoz port forward is not working for me.

My old computer wuz able to host games on Warcraft becoz of port forward, but ever since I upgraded my motherboard, CPU and gfx card. It wont let other people join my game, and it doesnt work for some odd reason.

Plz Help

EDIT: I have been port forwarding properly, and I even checked this link several times to check if I wuz doing it correct, which I wuz coz I memorized the process by now.


A:Help!! Port Forward is not working for me?

unlikely to be a motherboard issue. most probably:
- firewall is on, windows or other internet security app
- ip address has changed since new motherboard has new lan adapter
- application that is receiving remote port request isn't working correctly

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I'm trying to forward some ports because i want to stream games from my pc to an android device through an app called moonlight which requires portforwarding. I've been trying and searching for hours and I don't know what is wrong.

These are the required ports:
"The following ports must be forwarded through your router for streaming to work with the latest version of GeForce Experience:
TCP 47984, 47989
UDP 47998, 47999, 48000, 48010" from: https://github.com/moonlight-stream/moonlight-docs/wiki/Setup-Guide#streaming-over-the-internet
and i attached an image of the ports i added on the router:

I don't know what is wrong, can anyone help.

I'm happy to provide any necessary information.

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or something else needs to be forwarded. I portforward correctly on my router from my computer, internet browser, but it still doesnt go through. I cant get it to go for any port I try. I have no idea what the issue is and just want it to stop.
I dont know if its the modem, or a setting, its not windows firewall, not my antivirus, not the router firewall.
If you need any info, I will even put you in my will if that gets this fixed.
please help, even just breaking the news that getting a new router is required. I just want. this. fixed.
Im done at this point.

BTW- I have a ntgear n600 router, amplex internet, have tried everything easily thinkable.

A:Either port forward isnt working in netgear or...

Hi WinJake, have a look on your ISP website for correct settings.

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Hello! I am trying to forward a port so i can connect to my computer because i want to stream a radio station from computer to my phone.

I'm trying to forward port 88 on my Linksys WRT54G Version 6

I tried that but Boardwave audio streaming server still says it's not open!

Here are some pictures:

I'm using Windows XP Professional 32-Bit
Eset AntiVirus
and using Windows firewall
What am i doing wrong?
Thank you for your help!

Windows firewall screenie:


A:Solved: Port forwarding issues, Cannot forward port Please help! Linksys WRT54G

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I have a Toshiba A100, 12 months old, with 4 USB ports. In recent days one of them has stopped working. Device manager shows no problems. I have also downloaded and run usbready.exe and it reckons all is well. I have plugged several devices into the port (mouse, memory stick, wireless modem etc) all of which work on other ports but nothing seems to be recognised on the troublesome port. Is there anything else that I can do to diagnose the problem? - Derek

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I have had a similar issue in the past with my last PC (which had serious issues and was replaced with this one that is only a few months old now) and got help from these forums, the problem was completely fixed but following the same steps does not work for me this time.

Post #20: BSODs - 1000007e & 116

Saurabh A was a great help and that fixed my old problem but will not work for this USB 3.0 issue and was wondering if anyone had similar problems and was able to fix them?


USB 3.0 ports (front #6 and back #5) stopped working, when I plug my Western Digital 2TB Passport into the port it does not respond at all, like it has gone dead. This is the port I usually use for this device and have had no issues until now.

What I have done so far:
Uninstalled the USB 3.0 Host Controller and deleted the driver

Reboot the machine
Installed RENESAS USB3 Host Driver 30230 setup.exe from YET-D720201-0014, YET-D720202-0014 | Renesas Electronics America
This is what I see after following those steps and my USB 3.0 port is still not responding at all. I have right clicked it and tried to "Update" but it says it is the latest version.

Any ideas?

A:USB 3.0 port stopped working

Have you tried this fix?

USB Driver - General Fix for Problems[2]=Hardware%20and%20Drivers

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I have a Nvidia Geforce gtx 660, and the other day the feed from the DVI-D port just disappeared out of nowhere! I have tried using a different monitor, and using a different cable, but no luck. My computer thinks that it's working fine, it registers the monitor, and when I'm using dual screens, I can even move the cursor or drag windows into the dead zone.

I have tried both updating and rolling back my graphics card drivers, as well as doing the Windows Refresh (I have Windows 8.1), and it hasn't worked.

This is incredibly frustrating because I really like having dual monitors to do my designing. Any help is appreciated. Thanks in advance.

A:DVI-D port has stopped working

The card is likely faulty and needs to be replaced. The only real way to test, is to install the card into another PC.

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I tried installing a new scanner using my front USB Port but it did not work. I unplugged it from my front USB Port and used a rear port and it worked. Now my front USB Port will not read my flash drives which I use daily for quick backups. I tried a restore by backing dating one day, three days and a week but no luck. The divice manager does not indicate a problem with any USB Controllers but I can't tell which one is Drive K which is the one that is no longer working. I tried disabling the USB Root hubs and restarting but that did not restore the USB Port. What will restore this drive? Can I do a test to see if it is ruined now? Help!

A:USB Port Stopped working

This problem is a pain in the... backside.

I had exactly the same issue, I found patience was the key - the process somewhere was getting "stuck".

Insert a USB key and leave it in there. If you use your PC for a few hours then eventually it may detect the device and work normally from then on (worked for me).

It could be that the USB port has completely stopped working - to test this plug in a usb keyboard and see if you can enter the BIOS.

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Hi, The USB port on my laptop has stopped working, I've run the diagnostics and the error code below came up: 64VBVV-7NN8K5-MFGJMG-8D6X03 Is this problem fixable? Thanks, Glen

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Hi can someone please help, My usb 3.0 port suddenly stopped working. I have almost tried everything online to fix the problem but no result.The only problem I can think of is that I just updated my system bios from f.35 to f.44; for that I tried to restore bios by key combination method (windows +b) it didn?t work either. Can any one help me fix the problem. Thanks in advance.  

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Not sure why it happened but it did.
The usb ports on the back of my pc are working fine but this on the front 2 usb ports are not working.
I think that if i will shut down my pc or make a restart it will fix it this time.

But i don't want to restart my pc now.

1. Why it happen ? It's not the first time. I think it's due yo insert/remove my smartphone too many time from the usb port in the front. Is there any way to make it will not happen again in the future ?

2. How to fix the problem now without restarting/shutting down the pc ?

I went to device manager and i see under: Universal Serial Bus controllers two controllers out of 8 that have a yellow triangle with a black small line inside like a warning. I tried to make Scan for hardware changes but it didn't fix it.
What else can i do ?

This is a screenshot of this warnings i see:

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I run emachine T6524, xp media edition, svc pack 2, reinstalled xp os, wont boot with anything in usb port, freezes after boot when pluggin into a usb port, runs great with nothing in usb, downloaded chipset drivers installed in unknown devices??? Anybody got ideas please

A:my usb port stopped working...help

Give this a try and see if it helps:

Reinstall after you have removed all USB items. Use this method:Unplug all USB items


Control Panel



Device Manager


Show Hidden Devices

Scroll down to the USB area and open it with (+)

Right click on each item and Uninstall all that you have with that option

Reboot and let the computer find them

Plug items back in and test it.

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I have a Toshiba A100, 12 months old, with 4 USB ports. In recent days one of them has stopped working. Device manager shows no problems. I have also downloaded and run usbready.exe and it reckons all is well. I have plugged several devices into the port (mouse, memory stick, wireless modem etc) all of which work on other ports but nothing seems to be recognised on the troublesome port. Is there anything else that I can do to diagnose the problem? - Derek

A:USB port stopped working

which Toshiba A100 do you have?
A100-001 or A100-772??

if you have the 400.00$ A100-001 ---I would say live with it.

if 800.00$ A100-772 my recommendation would be to shop around to see who will give you the best price to diagnose your laptop problem

sounds like either the usb port its self is cracked or a wire has come loose.
the wire hasn't totally broken off because Device manager still sees the port.
but it is loose enough to corrupt the data transfer.
that why nothing works in the port.

could be totally off base---
but if the A100-772 800.00$ its worth it to pay a shop for a diagnosis
once you find out for sure you can still live with-it if cost to much to repair

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Hi, I want to connect my Yoga 720 to an external monitor with the USB-C to HDMI-Adapter from Lenovo . When I plug the adapter into the USB-C-Port (Thunderbolt) it doesn't work, I also don't get a message that something was plugged into the port ...Charging the Yoga 720 with the other USB-C-Port does work, the USB-3-Port does also work. I attached a screenshort of the device manager.Is the USB-C-Port (Thunderbolt) listed here? What can I do to make it work? Thanks!

ScreenClip.png ?207 KB

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My laptop is Lenovo Yoga 900. BIOS version C6CN39WW I'm not able to use USB "Always-on" port. When computer is on it works like charm, but it doesn't charge any devices when I turn the laptop off. In Lenovo settings everything is ok (toggle shows USB Always-on port is active). There's no "USB always on" setting in that version of BIOS. What am I doing wrong? Is it sth with drivers, or is it a hardware issue (but port generally is working).  I restored to factory settings but with no success.  KubaM

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Hello folks! Does anybody know where and how  to put a ticket and ask for repair? My yoga 510 was working normally and then it went to sleep mode. Didn't wake up anymore. Completely dead. I tried all the suggestions like pressing the power button for 10 sec, for 30 sec, etc. Nothing worked. The battery is sealed and can't be removed . So I need to send it to repair in London. Any address or phone to contact Lenovo?? tks a lot for your helpMonica


Hi monioia, 
Welcome to the Community Forums.
You can call in technical support:
0333-777-3991 (National Rate)For Lenovo & Idea products #2For Think products #3For Server #4To identify your product #0 
9:00 - 18:00 Monday - Friday
Service center locator here but it would be better to call in tech support first for proper service process.

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I am using the USB-C port on my Yoga 900-13ISK (Windows 10) to connect to an external monitor. Everything worked fine until this morning for some unexplicable reason the USB-C port stopped sending signal.When I plug in the USB-C adapter (converting to DP) my screen starts and then gives me a message "no signal". I get the same error when trying to connect via another converter to HDMI. Both adapters and cables worked before. I updated my graphics card drivers and of course am extending displays. Any ideas what might cause this problem and how to fix it? Any help would be very much appreciated.

A:Yoga 900 USB-C stopped working

I have a parrot and she's jumped on the keyboard, hitting the key that cycles between laptop display, external display and "both." Yeah, that took me a while to figure out why I couldn't get it to work properly. 
The other thing I'd do is try the cable with a different source, such as a PC. 

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Looking for advice on how to get my thinkpad X1 yoga pen working again.  Both touchscreen input and pen input were working properly earlier but now no pen input at all.  It doesn't appear to be a charging issue.   Hoping for a simple solution, and thanks in advance!


Hi there, Sand -
Thank you for writing in to the Lenovo Forum - happy to have you here today.
Make sure to check all your drivers are up to date: Click here
You can also use ThinkVantage System Update to check for newer drivers or BIOS.
Update us how it goes.
Tap that kudos button if I helped  If you find a post helpful and it answers your question, please mark it as an "Accepted Solution"! 

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Looking for advice on how to get my thinkpad X1 yoga pen working again.  Both touchscreen input and pen input were working properly earlier but now no pen input at all.  It doesn't appear to be a charging issue.   Hoping for a simple solution, and thanks in advance!

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the main computer in my house has suddenly connected to a different network and will no longer connect to the web. all others are still ok. any ideas why this may of happened and how to fix?

A:My network port has stopped working..

I posted the other day but didnt really give much info so didnt get any response...

My problem is i have a small network at home and my main PC (vista) has suddenly stopped connecting to the network. When looking into it i think it possibly is the port that stopped working, as this is the only comp that is connecting via cable as others are wireless, but if i plug the cable directly into my laptop it picks up the network straight away. I have tried updating the drive but comp says it is the most up to date one. Have also got windows updates that may help but they wont install as im not connected to the web (interesting how it managed to find the updates though)..

Any ideas or help would be hugely appreciated.


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Hi Everyone

I have recently discovered that my 4 USB port splitter has stopped working suddenly. It is about 4 years old and I am pretty sure it only supports USB devices up to 2.0
I am not exactly sure what caused it to stop working suddenly but I have two possible ideas.

A few days ago when I had it plugged in, the notification area displayed a message saying "This device can perform faster if connected to a 2.0 port". I am guessing this may have mucked up my USB device because my 4 Port USB is plugged into my computer via 3.0 USB and devices connected to it are all 2.0

Also I seem to have noticed quite a lot of USB drivers when I open device manager under "Universal Serial Bus controllers' and I am wondering if I need to disable one of them to allow my USB 4 port to work? (This is what happened with my sound utility)

I know that is should probably be plugged in to one of my other USB 2.0 ports on my computer but nothing happens there either. I think it needs to be reconised by the computer then it needs to install a driver called "MTT USB 2.0 Hub" or something.

Any help would be greatly appreciated

A:4 Port USB Problem Stopped Working

Disconnect one of the USB devices you have connected to your 4 port splitter, remove the 4 port from the computer & plug the USB device directly into the USB port, thereby by passing the 4 port device. If it now works then the 4 port is probably faulty.

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My USB port suddenly stopped working after inserting another USB device.

My unit has 4 rear USB and 2 front USB port. 2 rear USB port are used for USB mouse and USB keyboard, after inserting another USB speaker in the rear USB port, my mouse and keyboard suddenly stopped working with lights off , after which i transferred my mouse and keyboard in the front USB port and it works fine.

EDIT: i also tried to insert a usb digital camera in the rear port the usb mode will turn on but when i insert my keyboard in the rear port ,the digital camera usb mode will turn off.

any help would be appreciated

A:My USB port suddenly stopped working.

Hi Turbonis!
This article from Microsoft support page may help you understand and fix the issue through a few steps like scanning for hardware changes and resetting the USB controller:
If not, then it could be that the USB ports have just died. For that, you'll need to take your PC to a professional to determine the damage.
Best of luck!

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I use windows 7 64 os laptop [ Lenovo W510 ]. Today while working all of a sudden all usb ports stopped working,
I restarted the machine , but the pc couldn't shutdown properly. While shutting down I observed an BSOD.

I have attached the dump file, also I'm using latest drivers.

Can you please check the dump file and let me know what is the issue.


A:BSOD after USB port stopped working.

Hello Vijay,
I would update these drivers...

btwl2cap.sys Sat Apr 04 13:28:45 2009 - Broadcom Bluetooth L2CAP Service N
Broadcom.com - Bluetooth Support

CAX_CNXT.sys Wed Jul 01 07:59:52 2009 - Conexant Modem
Conexant: Support

CAX_DPV.sys Wed Jul 01 08:05:11 2009 - Conexant Modem
Conexant: Support

CAXHWAZL.sys Wed Jul 01 08:01:14 2009 - Conexant Modem
Conexant: Support

smihlp.sys Sat Mar 14 01:47:32 2009 - SMI Helper (likely a part of the UPEK Protector Suite)
Welcome To UPEK - Support - Customer Support

Tppwr64v.sys Wed Oct 18 21:40:21 2006 - Thinkpad Pwr Mgmt Port
Lenovo Support - Home page

vnaap.sys Tue Dec 30 01:10:44 2008 - Unknown Driver
Update this through Windows Update/Microsoft Download Center

XAudio64.sys Thu Apr 30 06:21:07 2009 - Conexant Modem Audio
Conexant: Support

I would also remove Norton. Norton is a known issue of causing BSOD on some Windows 7 systems. Use this KB article regarding on removing Norton products: Download and run the Norton Removal Tool to uninstall your Norton product | Norton Support

Use Microsoft Security Essentials (MSE) as replacement: http://www.microsoft.com/security_essentials/
Use Windows Firewall (built-in).



* *
* Bugcheck Analysis ... Read more

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I have an Inspiron 6000, and the USB ports have stopped detecting my USB mouse. The USB ports will detect my USB key or external harddrive... so I'm guessing the automatic drivers that were installed for the mouse have curropted or something.

I have a Dynex small laptop mouse, and I honestly have went through 5 of these because of the same problem. At first I thought it was the crummy mouse dying on me. But I never took the tiem to pay attnetino and notice the light on the optical is still on when plugged in.

This time though, I recently got some "USB port failure" messages that minimzed into the system tray but I could never open it up again or recreate the message.

Is there a way to check/update the drivers that were installed for this mouse by Win XP?

A:USB port stopped working for the mouse only!

try another port or buy a decent mouse.

unless it's some off the wall, cheapy usb mouse, it should work fine in xp.

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failure id for usb port 60920X-0008G4-WPTXOK-802HO3

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Hi my Serial port all of a sudden has stopped working its detected by windows but wont work.Ive carried out a loopback test using this http://www.hosenose.com/radio/support/loopback.htm and it failed.What do i do now ?

The motherboard is a gigbyte p35-dq6,os win32xp.

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I use this method to watch movies from my computer on my T.V. through services online. Now all it says when I connect it is no signal. The t.v. is brand new so I knew that wasn't the problem. So I bought a new DVI cable, still no signal. I can only be the port. Is there any way to reset or repair this problem

A:My DVI port just stopped working on my HP probook. It used t...

Does your computer have any other video ports? If not, you could try a usb graphics card.

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Mini HDMI port not working on my thinkpad S1 yoga. I cannot use this for my external monitor.  I Have tried different mini hdmi to hdmi cables with same result  I know the hdmi connection on the external screen is working.Can you suggest anything I can do to resolve this issue?

A:TP S1 yoga mini HDMI port not working win 10

Hi, did you manage to fix this problem?  My mini HDMI post doesn't seem to output video anymore... 

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Hi there, I was testing another pen from a different Yoga 260 on my machine. Suddenly pens stopped working. My trackpad settings were also defaulted, so I updated all my drivers and even the wacom drivers, but neither pen works on my machine. The pen works perfectly fine on the other machine so I don't think it's a battery issue on the pen

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This issue started recently, after months of it working fine. The internet just would randomly stop working. I would use the troubleshooting function, it would go through the process and connect to our network, but then when I tried to go to a website, it would say there was no internet. Eventually I was able to get an old Netgear USB Adapter to work. I have tried changing the power settings, removing the drivers in the device manager, and I have the latest wifi driver. I have read many of the help posts on other Yoga wifi issues. Is this a software issue or a hardware issue? Thanks for the help!

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Hello,sorry for my english, I'm french and I have somes difficulties...I bought a few days ago a yoga 260 and time to time the touchpad stops working.I have updated the driversAt times only the touchpad is blocked, or with the keyboard and the touch screen...If you had this problem, I would be happy to know the solutionthank you !  

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This morning, I found that my USB ports are not working. Any ideas on what is wrong? In the Device Manager I see USB drivers for the bluetooth and camera, but nothing for the ports - should there be? This only out of ordinary thing to occur was that I left the PC on and unplugged last night, and the batteries ran out. Help, I cant connect my iPhone!

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Hello,sorry for my english, I'm french and I have somes difficulties...I bought a few days ago a yoga 260 and time to time the touchpad stops working.I have updated the driversAt times only the touchpad is blocked, or with the keyboard and the touch screen...If you had this problem, I would be happy to know the solutionthank you !  

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hello! I have Lenovo yoga 3 pro 13ISK win 10 , and the USB port stopped working - the PC does not recognize it when I go to control panel - DEVICES - I don't see USB section.I did Lenovo system diagnostic = nothing, my BIOS is updated, my drivers are updated, I've done system recovery ... nothing helps screenshot of my control panel & device manager please try to help...;(

problem.jpg ?619 KB

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hi,Ive only had the laptop about a month and the touchscreen was working fine until tonight where it just stopped working whilst i was using it. I have tried a few things but the device manager says the device is in working order. Ive tried restarting and even disabling and re enabling the driver but to no avail. any help?

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I'm hoping someone can help me with the audio problem on my notebook. After owning my Yoga for about 2 months, the audio stopped working.  I don't know exactly when it stopped, I don't recall that it stopped directly after a windows update or anything like that.  I am using the factory loaded Windows 10.  The speaker icon in the task bar has a small red X on it.  When I click the icon Windows goes through a troubleshooting process and tells me it found a fix and asks me to click the button to apply the fix and then restart, but the problem persists.  If I right click and choose playback devices, the only two things that show up are my bluetooth speaker - nothing related to the internal audio.  If I go into device manager, under "other devices" there are two entries for "Intel High Definition Audio."  Previously there was one entry, I don't know when the second shows up.  If I right click and select update driver, windows does a search online but does not find an update. I have also gone to the Lenovo site and downloaded and installed the audio driver listed there but the problem continues. I took it into geek squad since I purchased it at Best Buy, and the guy looked at it for a couple minutes and told me it's a hardware problem and it will need to be sent in for repair. Any thoughs?  Any help would be greatly appreciated. Thanks.

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I've been using my 260 for a couple months now and generally have been pleased with it.  Unfortunately, the stylus stopped working while I was using it yesterday and I'm trying to figure out what's gone wrong. I suspect the internal capacitor is no longer charging, but I'm unsure how to check.  If it is a charging issue, is it possible that it's an OS driver issue?  A few weeks ago I changed my OS from Windows 10 to Ubuntu and if the stylus has a very impressive battery life it's possible it's just finally worn out, but I find it odd that this would be OS dependent, as doesn't the stylus charge even if the PC is off? If anyone can shed some light on this issue, it would be much appreciated.  Google has failed to provide me any helpful information and I'd really like to avoid reinstalling Windows 10 just to see if it starts charging my stylus - especially if it doesn't help!

Go to Solution.

A:Yoga 260 Stylus Stopped Working

Pull out the pen and look into the silo.  See if one of the little spring contacts is pushed back.  Don't touch them with something metalic, as you may short them out.  A toothpick is a good tool.

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Have had a Thinkpad Yoga S1 for several years and last week the pen stopped working.  I reinstalled the drivers and that didn't help.  Yesterday it started working again, but today it stopped again.  I ordered a new digitizer pen thinking it might be the pen, but the new one doesn't work either.  The touchscreen still work fine and I can write with my finger. Any idea what the problem my be?  

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Worked fine yesterday, now doesn't respond at all. I'm currently copying and pasting it... Beyond going to a support location, any ideas?

A:Lenovo Yoga 900 "n" key stopped working

Another thing I noticed - when the password page comes up on start up, some key is autotyping into the password field.

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HDMI port stopped working about a year ago. It had always worked on Windows 7 64-bit.  Also it worked on Windows 10 64-bit for quite some time.  I have HP Compaq PC with 3 TB HD with 2 new flat screen monitors each able to run as VGA or the
other way.  Had both monitors working fine.  Tried switching monitors, and everything else.  Plugged in, etc....,
I would like to simply download the correct drivers for the HDMI port, at leas for the monitor and graphics, install correctly, anin compatibility mode, I assume, and all I ask is that you please not lie to me and say I have to buy something. I'd appreciate
your expert help.  Everything works...need to install correct drivers in compatibility mode.  The correct ones.  In the correct places and know what to do if there is no "HD video, audio, and game controller" section, for example,
or "Graphics" section in device manager.

Thanx, Miguel

PS, my login email is not my correct email, but not allowable to change, so I cannot.

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Hi, I have this problem with my laptop. It was working couple of weeks back but now when I connect the cable the laptop screen goes black and nothing else happens. Tried to update to the latest driver from the Acer website but didn`t solve the problem. Any ideas? Many thanks 

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