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YOGA 720-12IKB Windows 10 USB port not working for any device

Q: YOGA 720-12IKB Windows 10 USB port not working for any device

My new YOGA 720's usb port is not working and some told me to update the BIOS. some say dont. what can I do on my own to check the port. I tried a wireless logitech mouse that worked briefly and when I noticed it wasn't working i plugged in my android and it did not register or charge. any ideas? BIOS Version/Date LENOVO 5GCN19WW, 9/25/2017System Model 81B5

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Hi, So my touch screen has suddenly stopped working on my yoga 720 and I don't know why. I have tried some fixes online and none of them seem to work. I have:disabled and enabled HID touch screenreboot my laptop uninstalled WACOM  

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The touchpad on brand new Lenova Yoga 720 does not function properly. After install, mouse pointer does not show and the touchpad does not work. The only way to get around on the computer is the touchscreen. Keyboard still works. A hard reset solves the problem temporarily. To get the mouse to show and the touchpad to work, I will have to hard reset the laptop everytime before desired use. If the computer goes to sleep, the touchpad dissapears. I do not think that the touchpad shows up anywhere in my devices. I am not sure because I do not know what the file may be called. Otherwise, I would uninstall the driver and re install. Support said to download driver off website, there isn't a touchpad driver available for download. I'd like to keep this laptop  and correct this issue. But it is a new computer so if there isn't a solution soon, I will return it instead of wasting time adding to it. Seems that many have had similar issues. Anyone any closer to an answer? Hello? Help?  

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I just purchased this laptop Monday, and this has been an issue from day one. I start the laptop and everything works fine, I close the lid and it goes into sleep mode. When I open the computer and resume from sleep mode the track pad does not work. the only way to get the track pad to work again is to restart the laptop. This happens every single time without fail which makes it a real PITA to use. . . I have updated the synaptics driver and generic mouse driver with no change in behavior. I have completely uninstalled all relevant drivers and let windows re-install them with no change in behavior. I have 10 days left to return this thing, so hopefully I can get this fixed before that because this form factor is great, but I won?t keep something that it obviously broken. Any help would be greatly appreciated!

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All drivers are fine. I have tried disabling and enabling & reinstalling HID touch screen drivers but it didnot work. I have also reset the PC . But i didn't fix. I dont think its a hardware problem. Any solution??   

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Hello, I want to know if there is a possibility to use the left alt function as fn function, Explaining better: I love to have the sound controll and brightness in the F keys, but in some laptops ive seen that if for example I press alt + F4, then the windows closes, this is what I want but right now I have to press Alt + Fn + F4.is there a way to do what I want or the only solution is to change the F keys to work as normal F keys and the to control audio and brightness I will have to press Fn???thank you

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so when I press shift the key board does backspace.icons cant be placed on the desktop , they dissapear.renaming folder or just playing with the folders-- deletes them.Down arrow and left arrow do not work.May be more problems with keyboard --dunno. I have done a system recovery.Problem not changed. I  have started the Novo menu.But the first item is highlighted, when I press enter nothing happenswhen I press down arrows, the next below item is not selected--first remains highlighted/selected.(down arrow does not work) Presently I cant get the Novo menu anymore,so consequently I cant load Win 10 via usb thumb drive. Need help, my research doesnt seem to find anyone with similar problem. 

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Hello, I've been reading up on the forums and trying to find answers. I have a Lenovo Yoga 720-12IKB model. I am trying to dual boot with Linux but I keep running into this issue where I can't change to Legacy mode. The option to change the sata controller does not appear. It is stuck on Ahci which is what I want, and when I want to change from UEFI to Legacy, the only option I have is UEFI. Does anyone have any help? thanks!,

A:Yoga 720-12IKB enabling legacy mode?

I don't have a similar laptop and can't answer your questinon - but why do you need legacy mode?
If your SATA controller is in AHCI mode (and Windows is tolerating that) you should be able to install Linux along side. Several distros will happily boot in UEFI (and secure) mode.
Please explain.  Perhaps others will have suggestions.

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Hi. I've got a Yoga 720-12IKB (81B5003QUS) with the latest BIOS update (5GCN20WW). I would like to enable Legacy BIOS mode, but the "Boot Mode" field in the BIOS configuration only allows me to select UEFI. Is there any way to fix this and use Legacy BIOS?

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Some days ago, I found out the Lenovo Vantage battery gauge on taskbar disappeared. Even the menu to turn it on or off in Lenovo Vantage also disappeared too. Is Lenovo going to release next update soon to make it available, or is there any way for me to get it back? I'd already reinstalled the Lenovo Vantage and got all newest drivers installed, but nothing helped. 

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Any solution for it. Its a new laptop bought from US and it have warrenty but .. I couldnot found any service center in Nepal.

A:Lenovo yoga 720-12ikb battery decline when charger is plugged in?

Define "decline." What percentage to what percentage. If it's 100-95, that's by design. If it's around 60, you may have battery conservation mode engaged. At least I THINK that's available on the 720.  If you're down to 20% and it's not charging, then there's a problem. 

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I have a new since Christmas Yoga 720-12IKB and find that the wifi is disconnecting/reconnecting numerous times per minute. It causes significant distruption trying to use the computer, with frequent errors about not being connected to the internet. Generally causes the device to operate very slow, nearly unusable. I'm not having disruption on any other computers/tablets/phones connected. I've tried a fair amount of troubleshooting but have yet to find a solution. The one workaround that I've found is that when I connect to power, the problem goes away. Remove power, issue returns. Suggests a problem with the power management (or possibly network adapter driver) but I can't figure it out. The network adapter is Qualcomm QCA61x4a. Here's what I've attempted: 1) Disable the power management feature of the adapter (uncheck allow computer to turn off)2) Run Lenovo System Update to make sure all drivers are up-to-date3) Manually updated the driver via device manager (went from .312 to .438)4) Switch roaming agressiveness to low Other than making it a desktop (needing to leave it plugged in to avoid the issue) any suggestions/resolution to this problem? Anyone else seeing the same behavior? Frustrating problem to an otherwise fantastic, fun, and fast Yoga!!! Looking for a light at the end of the tunnel....

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Yoga 720-12-IKB 81B5, setting up as remote machine for elderly parents with dementia, needs boot-on-timer and wake-on-AC-power options in BIOS because elderly parents can't be counted on to keep it running. BIOS is 5GCN20WW, no auto-boot options are visible. Machine is otherwise perfect for the task, but auto-boot capability is a must-have for the intended usage.

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Long list of items that have crept up on this laptop after using it for several months. . . . The touchscreen no longer works.   I have reinstalled drivers over and over again, deleted and let windows choose the driver, and have tried everything I can think of to get it working. Yet it no longer recognizes touch at all. Bamboo Ink styles works just fine, uninstalling the associated drivers did not change anything. It slowly started to work intermittently and then just quit all together. Keyboard keys just stop working  So far some seemingly random LOWERCASE letters stop working, if I hold shift I get an uppercase just fine, or if I hit capslock it will give me the uppercase of whatever letter is not working for that day, so the button itself is fine. This has happened on several different keys completely randomly for no apparent reason what so ever. The only way to fix the issue once it occurs is to stop what you are doing and restart the computer. . . Doing so might fix it for a week or an hour. In the middle of typing or clicking, or doing anything at all it decides to "sleep"    I can be in the middle of typing something, moving the mouse to click on something, or using the stylus to take notes and without warning it will enter sleep/hibernation mode. . .  I have updated the drivers to the latest that are available, I also updated the BIOS to the latest recommended to see if that might help solve some of the issues. So far no lu... Read more

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I have a HP dv6910us Pavilion and the DVD is not listed in Device Manager. DVD Tray opens and light comes on but does not play DVD. 1st USB port on left side gets - USB Device Not Recognized.One under it works and one on the right side works.

OS Windows7 Ultimate. It is running kind of screwy so I wanted to reinstall Windows7 but with the DVD not operating Can't do it. Seems like maybe something in the register got erased or corrupted. If I can get the DVD and USB port to work I won't have to reinstall Windows 7. Anyone have any ideas or similar situation?

A:DVD (not working) not found in Device manager, 1 USB port not working

Sounds like a missing driver. Check to makes sure you have all your drivers and that they are all the most current or updated version.

HP Pavilion dv6910us Entertainment Notebook PC | HP? Support

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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!

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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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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, 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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Hi, The HDMI Port in my ALL in One PC is not working While is connected to Projector,TV,or any device!!
I tried to reinstall all Video drivers and bios update but the problem still the same (no signal Deteted).
Mod's Edit: Additional information added to Subject line for clarity of issue.

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Hello, I am attempting to use the mini display port outpt on the Thinkpad Yoga14 to connect to an HDMI monitor using a miniDP to HDMI adapter. I've tried two different adapters. The monitor is never recognized. However, the mini-display port will work with a miniDP to DVI or miniDP to VGA adapter cable (I verfied this at a store where there were multiple cables and monitors to use).
miniDP to HDMI: does not work
miniDP to DVI: works
miniDP to VGA: works
Has anyone else seen this problem?
Moderator comment: Model added to subject for clarity.

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Trying to connect Yoga 920 laptop to TV using a Moshi USB-C to HDMI Adapter and 2m Hdmi cable. After plugging in port getting the error attached. Power surge on the USB port - A USB device has malfunctioned and exceeded the power limits of its hub port. You should disconnect the device.

A:Yoga 920 USB C to HDMI not working - power surge on the USB port

Start by making sure everything is up to date using Lenovo Vantage. Drivers, BIOS, the works.

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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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I have a customer who has the above model Lenovo laptop. She hooked up an an external display via HDMI using a HDMI-mini HDMI adapter connected to the mini-HDMI port of the laptop which was working fine for more than a few months. She was using the Best Buy Insignia brand. All of a sudden, the external display no longer detected the laptop and the laptop didn't detect the second display. I remoted in and checked everything out and it seemed OK as far as drivers and such so, for simplicity sake (and after having her verify the external display was working wtih other devices), I had her pick up an Insignia HDMI-miniHDMI cable and just bypass the adapter. She tried that, no luck. So I remoted in again and uninstalled the Intel and Nvidia drivers and reisntalled them using the drivers from the Lenovo website. There was no change. I've done some extensive research about this issue in the forums and there have been other models with similar issues and the fixes were... using a different cable, different adapter, or both. These were mainly solutions to solve the problem of secondary displays not being detected at first, not fixing the issue of it working just fine for a while until one day... nothing. Has anyone come across an issue similar to this? I'm trying to get more of a definate solution versus swapping more adapters and cables around. One last idea I have is to hook it up to my monitor via an HDMI to DVI adapter using her HDMI to mini HDMI cable but I have a feeling, th... Read more

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bought a brand new Yoga 510 yesterday and straight of the box the pointing device wont work. went to device manager saying code 24 error message. I then updated drivers but still get same message. very disappointed this could happen with a brand new notebook . await your instructions to fix.  

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the Synaptics Pointing Device is not working on my Thinkpad Yoga 12. Suddenly during operation the mouse and the trackpoint stop working.
I tryed to install a new driver and even install Windows 10 again. During the instalation, no mouse was available. An external USB mouse works without problems.
If i search for the Synaptics Pointing Device in the device manager of windows, the mouse is displayed with the error code 24: "This device is not present, is not working properly, or does not have all its drivers installed".
It is possible, that the mechanism for screen flipping disabled the Pointing device?
Or is it possible to deactivate the Pointing device with a secret key combination?
Moderator comment: Model added to subject for clarity.


Go to Solution.

A:TP Yoga 12 - Synaptics Pointing Device not Working

Hi Flo,Try to update your BIOS at first step by step to the latest version (1.19). After I did that, the problems with synaptics were gone.  

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I have trouble as described in the topic,
I have two most old laptop models, Dell Precision M6300 & Dell Latitude D630.
When laptops is docked to replicator potr dock stations D/APR (PR01X) or D/DOCK (PD01X) - bigger one model with DVD port,

headphone jack port not working under Windows 10 Pro x64 installed on both laptops.

On M6300 previously was installed Windows 7 Ultimate and on D630 was Windows 8.1.
On Dell  M6300 on Win 7 Ult. headphone jack port worked properly.
On Dell D630 on Win 8.1 I'm not sure due I do not used this on it (more years ago when it was on Win XP headphone jack port worked properly)
So when Ms start delivering updates do Win 10, I did it on doth laptops, everything on both models working fine, but only this headphone jack port in D/APR (PR01X) or D/DOCK (PD01X) wouldn't like to work when I'm dockind Dell M6300 (D630 I docked only
for test if on this one jack port will work or not) but not working too like on M6300.
So loks like drivers whih was made oryginally for Win Vista x64 ale which was workable for Windows 7 64b wouldn't like to work on Windows 10.
Maybe You have some tips what to do with this to press them to work?


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Im having a problem with my fingerprint reader on my X! Yoga. Is running a synaptics WBDI device, and i've tried the solution with no luck in the post here: https://forums.lenovo.com/t5/ThinkPad-P-and-W-Series-Mobile/P50-Win-10-Pro-Fingerprint-stopped-worki... In devce manager the log says: This device cannot start. (Code 10) In my Event log it says:The Windows Biometric Service failed to start its secure component.The operation failed with error: 0x80070032. Any ideas?

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I am using Microsoft Windows Virtual PC in Windows 7 and getting error : Could not attach the USB device. you can attach the USB device to a different USB port or restart the VM and try again, while trying to attach a USB 2.0 or USB 3.0 Mass storage device.

Please help

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Okay, so I got an error message a while ago stating that "Power Surge On Hub Port: A USB device has exceeded the power limits of its hub port", I ignored this message for a while until my USB, wireless mouse receiver stopped working completely (BTW at this point I had a WiFi adapter, Bluetooth receiver,wireless mouse receiver, wired keyboard, webcam and I had my phone and tablet both charging off of the PC), I then unplugged my phone and tablet from the computer (assuming that they were taking too much power) but this did not work, I restarted my computer with only a keyboard and mouse plugged in. After the restart neither of the device were working so I unplugged the mouse and tried it in a different computer, it didn't work here either but it gave the "USB device has malfunctioned and Windows does not recognize it" error message. After that problem, all of my USB device have slowly started to stop working in both of my computers and I can't figure out what the problem is. So far, as of this post my WiFi adapter has stopped working along with my wireless mouse, wired mouse, wired keyboard bluetooth adapter and webcam.

A:USB port problems with Windows 8.1; device malfunctioning.

Oh, and by the way, I have already tried to uninstall, re-install and update all the drivers and stuff.

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Device Encryption option is not available for Windows 10 Home. (The option is absent when searching under settings. BitLocker is offered for Windows 10 Pro upgrade, which costs considerably more).According to internet (Microsoft, StackOverflow), Device encryption requires TPM 2.0 and InstantGo. Seems like Yoga 700 does not support InstantGo (checked settings with powercfg /a) Device Encryption is important for a lot of people who have security concerns, but prefer not to upgrade to Pro for BitLocker. I would love for you to help solve this issue for me. Thanks,

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I have ASUS P8Z77 ?V motherboard and the front USB 3.0 headers are not working when I plug in a USB 3.0 device. When I plugged in my Kingston USB 3.0 Flash Drive into the front USB 3.0 header it didn't work. As in, when I tried to move a file into the flash drive, the drive disappears and it makes that USB unplugged sound. But if I connect it to any back USB 3.0 ports, it works fine.

But, if I plug in my Scandisk USB 2.0 Flash drive into the front USB 3.0 ports, it works without any errors.

This only happens with USB 3.0 devices and it has to be connected to front USB 3.0 ports.
I have installed all the latest drivers and updated my BIOS to the latest one. I have checked if USB 3.0 is enabled in BIOS.

I asked to my friend to help me. He has AMD rig with ASUS M5a99X EVO motherboard, which has a front USB 3.0 header. We installed all AMD drivers for his rig updated everything, the front USB 3.0 ports worked fine. We manage to transfer all the files at full-speed on to the Kingston 3.0 flash drive without any errors, so I know it?s not my PC case?s USB 3.0 cable at fault.

Any help. Please note the front USB 3.0 ports work if I plug in a USB 2.0 device.

A:My front USB 3 port doesn't read USB 3 device, but reads USB 2 device

Hi dino1989,

I checked the motherboard manual and it talks about only 2 USB 3.0 ports; appears that it offers 2 USB 3.0 port connectors at the back panel:

Please take a glance at the motherboard layout. Connectors highlighted (11) are 10-1 pin USB56, USB78 & USB910. These connectors are used for USB 2.0 ports (9 ports) at the rear panel. If the 2 USB ports in front are also connected to there, they may comply with USB 2.0 specification and would support upto 480 Mbps connection speed. (Tried but could not find anything in the manual that gives a clue about the source of the USB ports in the front).
However, you may go to 'Onboard Devices Configuration' and try setting 'USB 3.0 Controller' as [Enabled] in 'BIOS' to see if that gets the USB 3.0 ports functional in the front panel. This 'Enables / Disables' the USB 3.0 controller.

To access 'motherboard BIOS', you may want to refer to this manual: http://dlcdnet.asus.com/pub/ASUS/mb/...5A78L-USB3.pdf

Hope this helps. Do reply with the findings.

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my hdd usb 3.0 and my printer hp photosmart don't apperar and they appear on the device manager. 

A:USB device connected to port but I can't see device in My Computer

It is hard to know from here, but an HDD won't appear until it is initialized, partitioned and formatted with a drive letter assigned.  The printer should appear in the control panel under devices and printers,

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Here is my situation,
I own a Lattitude E7450, and needed to connected two displays to it. I went ahead and bought the Dell E-Port Plus Advanced Port Replicator with USB 3.0, since it has 2 DVI ports on the back. It shows it is compatible with my laptop.
I set up my dock, connected my laptop, as well as both external monitors. Only one monitor shows a duplicated desktop. When I go into the display settings, I cannot see any existence of another external display being connected.
All of my drivers are up to date, restarted laptop many times. Pretty bummed out.
Anyone have any solution/knowledge to this?

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I recently started using the E-Port Plus Advanced Port Replicator with my Latitude E7450, but the headphones are not working. Sound comes from the laptop itself, even when the headphones are plugged into the dock or laptop. The headphones work with other devices, and the laptop works with the headphones when it is not docked.

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I have compaq presario c700 laptop.

USB ports are not working in windows.but it is working in BIOS.(e.g usb keyboard.)

I thought that it would be windows problem so I planned *to install new os. Cd drive doesn't work.so I have only option to install through usb.

When I try to install os , after I click INSTALL Button I got error "A required cd/DVD drive device driver is missing..." ..what should I do now ?*
Thanks in advance .

Note: first my all USB ports did not work suddenly .then I gave my laptop to service centre. They told that USB ports are shorted and they only made one port to function. But that too working in bios only. Pls see the error below.

A:USB port is working in Bios but not in windows ?

try running fixit


in the device manager click on view at the top and in the dropdown
show hidden devices
then uninstall all listed usb items
turn the computer off
unplug usb plugs
reboot twice
replug in the usb plugs

post a scrren shot of the device manager

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I've got a new TV that has a HDMI port, I have a PC with a GeForce GTS 250 graphics card.

I tried connecting my PC to the TV using HDMI cable, it works while booting, works if I boot with Ubunto, but disconnects if I boot with Windows 7, it shows the "Starting Windows" message but it disconnects once it's about to show the user's log on page.

What's the problem out there? I'll appreciate any help.

A:HDMI Port Not Working On Windows 7


I had to run NVIDIA Control Panel then connect my TV to get it recognized.

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My system was working fine last night. No update or driver changed since last night.

This morning, I boot up my system, it boots normally, the Windows 7 logo appare then when it boot into Windows, my display go blanks (monitor in power save mode like the system is off).

I tried 640x800 mode and screen still blank, tried retore my system from a image (hence older video card driver) also blank.

Then I tried to switched to another DVI port and it worked.

Does that mean one of the DVI port no longer works? It works uptill the Windows logo.

My System:
Windows 7 64 bit SP1 with latest updates
4GB ram
Geforce 560 TI video card

A:Windows problem or DVI port not working?

Have you updated your Video driver now? NVIDIA DRIVERS 301.42WHQL

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Hi everyone I am trying to add a second monitor to my all-in-one computer but the monitor nor the computer seem to recognise that a HDMI cable is plugged in.  The screen I am connecting to is a Dell screen.  When the HDMI cable is in my computer it just flashes black and back tot he main screen again.  Also the second monitor does not receive a signal. Help please, searching and searching for an answer for days! Many thanks

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Plzzz answer me my usb port is not working as I installed windows 7 ultimateWhat to do nowI installed all drivers from hp support


View Solution.

A:Usb port is not working when I installed windows 7

Download driver booster and then use it when u have internet connection

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I have a hardware device that supports three USB interfaces, serial, storage and RNDIS. The device works fine on most of the Windows 7 service pack 1 PC, however the serial port and storage interface are failed to be detected by the Windows 7 on two newly
purchased DELL desktop PCs. When the device is plugged in, the RNDIS is immediately detected and the USB viewer can retrieve all three interface descriptors from the RNDIS. However no composite device entry is generated under the USB controllers in Device
Manager. This is a composite device, normally it should show up. When I plugged the same device to a working PC, I can see the composite entry under the USB controller and three other entries under the storage, network and Ports. If I disabled the RNDIS on
the device side, the two serial port and storage will show up as composite device under the USB controller and everything works fine. It looks like on these new problematic DELL PCs, the RNDIS takes over and never tries to discover the other two interfaces.
I can not figure out what causes the problem and how to trouble shoot this problem. Thank you for your help. Any hint could be useful.


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I have 2 different adapters and neither one will work on my new computer with windows 8. Any fixes? Are there any adapters available that will work on windows 8?

A:USB to serial port adapter not working on Windows 8

Welcome to Tech Support Guy

What is the serial device you are trying to connect
What is the make of the USB to serial adapter

The problem is that the processor chip - YES they do have one, is not in many cases compatible with Windows 8, especially 64 bit, as of course the actual working of the adapter is achieved by connection to the USB port and then transmission of data from and to the USB hub.

Not knowing what you actually wish to connect your best first port of call is here to see what is on offer

scroll down for USB to serial or click USB on menu at top

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Hey guys, I'm a pretty advanced computer user but I've run into problems, here's my quick story

I had an old computer so I put Ubuntu 7 on it, well yesterday I decided it was finally time to upgrade to Ubuntu 8, which turned out to be a disaster because the graphics card doesn't work very well with Ubuntu 8. So I decided to bite the bullet and install Windows XP SP2 on it. The computer is connected to the internet through an ethernet port hooked up to a router. However Windows CAN NOT realize that there is an internet connection and will not set up the Local Area Connection like it normally does. Now does this mean that I need to get drivers for my motherboard and stuff like that? Since I don't have internet on my windows machine, I'll have to download them to this computer, transfer them by means of Flash Drive, correct?

Also, how would I be able to find out what drivers I need? Any help is much appreciated! Thanks!

A:New Windows XP SP2 Installation - Ethernet Port Not Working

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I re-installed windows on my XPS 14z, 
Installed all the drivers (inc. chipset, bios , etc.)
updated all the windows updates.
but the SS USB port driver didn't install. (you can see it on Device manager as "Universal Serial Bus (USB) Controller" with no driver)
I have searched everywhere for it, I tried Dell PC checkup, automated driver search etc. 
I saw on these forums a similar problem with the XPS 15z and tried their solution to no avail.

can anyone point me to a driver? 

Thank you

A:Dell XPS 14z USB 3 port not working after windows re-installation

My hat is off to you. I deleted my driver and then could not reinstall because it kept saying I had a newer driver, which I did but it would not work either. I installed the driver via the link you provided and even though it said it was for an XPS which I have a 14z, the driver worked beautifully. Thanks so much and have a great year! I f we lived near by I would buy you a beer!

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After installation of drivers which I get from Mr. Paul Tikkanen's link, this laptop runs windows 7 64bitmore or less satisfactorily. Many many thanks for your valuable support.But, one thing, all the ports (usb ports & sd card port) are functioning, excepting the HDMI portwhich was working properly when I had installed windows 10 on this laptop.I have installed-1)Driver-AMD Chipset-radeon-crimson-16.7.3-sb-sata-ahci.2)Driver-Audio-Realtek High-Definition (HD) Audio Driver sp71379.3)Driver-Graphics-AMD High-Definition (HD) Graphics Driver sp71253.4)Driver-Keyboard,Mouse & Input Device-sp72664.5)Driver-Network-a)Broadcom 802 11bgn WLAN Driver for Windows 7 sp70888.b)Broadcom Bluetooth Software sp71440.c)Realtek Local Area Network (LAN) Driver sp71268.6)Driver-Storage-Realtek Card Reader Driver sp71266.Is it a problem of driver or hardware (HDMI Port)?Please once again help me to solve this problem, so that I can connect my laptop with my LED TV.My email id [email protected] you.Yours-Debasish.

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