Customer Ratings & Reviews

We are sorry to hear that you are having issues with the fan noise from your Lenovo C940-14 4K model, even with Intelligent Cooling enabled. If the fan over-rides your manual settings within Intelligent Cooling, be sure any software you installed is compatible with Windows 10. Incompatible software will increase the system workload and require the fan to spool up to higher RPMs. There is no need to install Microsoft Office software. The software is already part of the operating system, you just need to activate the software with a purchased product key. If you have installed a copy of Microsoft Office, this is conflicting with the existing copy on the system and this will slow your system down. If you have installed a 3rd party anti-virus program, be sure that Windows Defender is turned off and that the trial version of McAfee Anti-Virus software is uninstalled. There can only be one anti-virus program on the system. You may need to restore your system to original factory default settings if any of the programming errors have occurred. You can do that by typing "restore" in the Cortana search window. Just click on the magnifying glass icon at the bottom left of your Windows 10 Desktop. Click on "Reset This PC" Then click on "Get Started" and follow the on screen directions to restore to factory defaults. If the problem persists, we recommend you contact Lenovo Tech Support at: 877-453-6686.

We are sorry to hear that you are having issues with your Lenovo Yoga C940-14 4K model number 81Q90041US. You mention updating the Operating Software on the Yoga C940-14 4K model. Be sure to use the Lenovo Vantage APP to be sure you are not missing critical BIOS files and that you have the latest version of Windows 10 on the computer. You can easily accomplish this by scanning the computer with the Lenovo Vantage Utility software available on this computer. This system has Lenovo utilities installed to help maintain the health of the device and keep the operating system software up to date. Type "Lenovo Vantage" in the Cortana Search window (if Lenovo Vantage is not installed on your device, you can download the APP and install it now). Select Lenovo Vantage from the list. In the window that opens, click on "Health and Support". In the expanded menu, select "Hardware Scan" In the window that opens, select "Run Quick Tests". This will scan your entire system for errors. Follow any directions that may pop up. If the problem continues after this scan, now click on "System Update". First select Windows update from the menu. Scan your system to be sure you have the latest version of Windows 10. Once that scan is complete, select "Additional Updates". This will scan your device to be sure there are no new BIOS/Driver updates needed. Follow any instructions that may pop up. If the issues continue, we recommend you make an appointment with your local Best Buy Geek Squad to further examine the issue.

The Lenovo Yoga C940-14 4K model has a Battery Saver function. Once the battery is fully charged, but is still plugged in, to prolong the life of the battery, the computer will stop charging the battery and let it drain. This will make the Battery Charging indicator to display, PLUGGED IN NOT CHARGING. Let the battery drain to 90-percent and it should begin charging the battery again. If the issue continues, we recommend you call Lenovo Tech Support for help with your specific issue at: 877-453-6686.

We are sorry to hear that you had an issue with your Yoga C940-14. Be sure any software you installed is compatible with Windows 10. There is no need to install Microsoft Office software. The software is already part of the operating system, you just need to activate the software with a purchased product key. If you have installed a copy of Microsoft Office, this is conflicting with the existing copy on the system and this will slow your system down. If you have installed a 3rd party anti-virus program, be sure that Windows Defender is turned off and that the trial version of McAfee Anti-Virus software is uninstalled. There can only be one anti-virus program on the system. You may need to restore your system to original factory default settings if any of the programming errors have occurred. You can do that by typing "restore" in the Cortana search window. Just click on the magnifying glass icon at the bottom left of your Windows 10 Desktop. Click on "Reset This PC" Then click on "Get Started" and follow the on screen directions to restore to factory defaults. If the problem persists, we recommend you contact Lenovo Tech Support at: 877-453-6686.

We are sorry to hear that you are having issues using the webcam with manual Privacy Shutter on the Lenovo Yoga C940-14 4K model. Before you use the webcam, be sure to open the manual Privacy Shutter over the Lens of the webcam. There is a small tab over the webcam lens. Move this tab to the right to open the Privacy Shutter. Here is a link to a Yoga C940-14 YouTube product demonstration video that highlight the manual Privacy Shutter and how to open it:  https://www.youtube.com/watch?v=bGUVBAwXWS0

We are sorry to hear that you had issues with the Thunderbolt connection on your Lenovo Yoga C940-14 4K model. There should not be excessive heat generated at this port. We recommend you call Lenovo Tech Support for help with your specific issue at: 877-453-6686.

We are sorry to hear that you had issues with the webcam on your Lenovo Yoga C940-14. There is a manual Privacy Shutter on the webcam. Be sure to open this Privacy Shutter all the way, by sliding the tab that is above the webcam lens to the right. There is a red dot over the webcam lens then the Privacy Shutter is closed. This red dot will disappear when you slide the Privacy Shutter tab to the the right and the webcam will be operational until you close the Privacy Shutter again.

We are sorry to hear that you are having issues updating the drivers on your Lenovo Yoga C940-14 4K model number 81Q90041US. First, check to be sure you have the latest version of Windows 10 on the computer, then update all of the BIOS files and drivers, including the touchscreen drivers, up to that latest version of Windows 10. You can easily accomplish this by scanning the computer with the Lenovo Utility software available on this computer. This system has Lenovo utilities installed to help maintain the health of the device and keep the operating system software up to date. Type "Lenovo Vantage" in the Cortana Search window (if Lenovo Vantage is not installed on your device, you can download the APP and install it now). Select Lenovo Vantage from the list. In the window that opens, click on "Health and Support". In the expanded menu, select "Hardware Scan" In the window that opens, select "Run Quick Tests". This will scan your entire system for errors. Follow any directions that may pop up. If the problem continues after this scan, now click on "System Update". First select Windows update from the menu. Scan your system to be sure you have the latest version of Windows 10. Once that scan is complete, select "Additional Updates". This will scan your device to be sure there are no new BIOS/Driver updates needed. Follow any instructions that may pop up. If the issue still continues after these updates, we recommend you call Lenovo Tech Support at: 877-453-6686 for additional help.

We are sorry to hear that you are having issues with your Lenovo Yoga C940-14 4K model. It is possible that resetting the computer back to original factory settings may fix the issue you describe. Here is a link to instructions for resetting a Windows 10 computer back to original settings:  https://support.microsoft.com/en-us/help/12415. If you can not properly boot the computer, this system is equipped with OneKey Recovery System. There is a very small pin hole on the bottom left of the device, right near the bottom left corner of the cooling vent on the bottom device. You will need a pin to push this reset button. Plug the device in. Let the battery charge for about 15 minutes. Push the reset button. The system should boot to a choice screen where you can choose "Restore To Factory Default". Select this. It will delete everything from the hard drive except the original factory install of the operating system. You will need to reinstall all programs and files after the reset. If you don't have copies of the files, try to make one before you restore by selecting "Boot to desktop" and trying to back up your files. Once you have the computer restored, be sure any software you installed is compatible with Windows 10. There is no need to install Microsoft Office software. The software is already part of the operating system, you just need to activate the software with a purchased product key. If you have installed a copy of Microsoft Office, this is conflicting with the existing copy on the system and this will slow your system down. If you have installed a 3rd party anti-virus program, be sure that Windows Defender is turned off and that the trial version of McAfee Anti-Virus software is uninstalled. There can only be one anti-virus program on the system. You may need to restore your system to original factory default settings if any of the programming errors have occurred. You can do that by typing "restore" in the Cortana search window. Just click on the magnifying glass icon at the bottom left of your Windows 10 Desktop. Click on "Reset This PC" Then click on "Get Started" and follow the on screen directions to restore to factory defaults. If the problem persists, we recommend you contact Lenovo Tech Support at: 877-453-6686.

We are sorry to hear that you are having screen flicker issues with your Lenovo Yoga C940-14 4K model. This can be corrected by updating to the latest version of Windows 10, then updating the BIOS files and drivers up to that latest version of Windows 10. You can easily accomplish this by scanning the computer with the Lenovo Utility software available on this computer. This system has Lenovo utilities installed to help maintain the health of the device and keep the operating system software up to date. Type "Lenovo Vantage" in the Cortana Search window (if Lenovo Vantage is not installed on your device, you can download the APP and install it now). Select Lenovo Vantage from the list. In the window that opens, click on "Health and Support". In the expanded menu, select "Hardware Scan" In the window that opens, select "Run Quick Tests". This will scan your entire system for errors. Follow any directions that may pop up. If the problem continues after this scan, now click on "System Update". First select Windows update from the menu. Scan your system to be sure you have the latest version of Windows 10. Once that scan is complete, select "Additional Updates". This will scan your device to be sure there are no new BIOS/Driver updates needed. Follow any instructions that may pop up. If the issue still continues after these updates, we recommend you call Lenovo Tech Support at: 877-453-6686 for additional help.

The Lenovo Yoga C940-14 4K model will fully charge in approximately 90-minutes and deliver up to 10 hours of battery life, depending on the work the device is performing. The internal fans within the Yoga C940-14 4K Model will maintain the proper operating temperature of the device. How often the fans run depends on workload and the energy management settings the device is set to. You can manually adjust your energy management settings within the Lenovo Vantage APP. Every component of Yoga C940 was engineered with your experience in mind. That’s why The Yoga C940 offers the brilliant color and clarity of a 4K VESA-Certified Display HDR 400 edged with ultra-narrow bezels. At 500 nits brightness, it’s 50-percent brighter than standard SDR displays. You’ll enjoy amazing realism that's vivid, nuanced, and powerful. Capture your ideas the moment inspiration hits with a garaged digital pen. Featuring an in-body charging compartment, the Yoga C940 ensures you’ll never lose a thought—or your digital pen—again. The convertible hinge hides a powerful Dolby Atmos Speaker System that immerses you in 3D sound in every mode. Combined with two sets of speakers featuring powerful subwoofers, custom tweeters, and unique vibration buffers that reduce unwanted noise, your audio will sound bigger, deeper, and more accurate. Experience how the Yoga C940 embodies world-class craftsmanship, innovative solutions, and elevated design. Log into your Yoga C940 in less than two seconds with an integrated fingerprint reader. That’s three times faster than the average time it takes to type a password. Forget your password. Yoga is committed to protecting your privacy. Slide the Yoga C940’s TrueBlock Privacy Shutter closed for true peace of mind when you’re not using your webcam.

We are sorry to hear that you are having issues with your Lenovo Yoga C940-14 4K Model. It is possible that resetting the computer back to original settings may correct the problem. Since you can no longer boot the computer, this system is equipped with OneKey Recovery System. There is a very small pin hole on the back, right side of the device, right near the bottom right of the cooling vent on the device. You will need a pin to push this reset button. Plug the device in. Let the battery charge for about 15 minutes. Push the reset button. The system should boot to a choice screen where you can choose "Restore To Factory Default". Select this. It will delete everything from the hard drive except the original factory install of the operating system. You will need to reinstall all programs and files after the reset. If you don't have copies of the files, try to make one before you restore by selecting "Boot to desktop" and trying to back up your files. Once you have the computer restored, This system should be a fast system with its Core I-5 processor and 8GB of RAM. Be sure any software you installed is compatible with Windows 10. There is no need to install Microsoft Office software. The software is already part of the operating system, you just need to activate the software with a purchased product key. If you have installed a copy of Microsoft Office, this is conflicting with the existing copy on the system and this will slow your system down. If you have installed a 3rd party anti-virus program, be sure that Windows Defender is turned off and that the trial version of McAfee Anti-Virus software is uninstalled. There can only be one anti-virus program on the system. You may need to restore your system to original factory default settings if any of the programming errors have occurred. You can do that by typing "restore" in the Cortana search window. Just click on the magnifying glass icon at the bottom left of your Windows 10 Desktop. Click on "Reset This PC" Then click on "Get Started" and follow the on screen directions to restore to factory defaults. If the problem persists, we recommend you contact Lenovo Tech Support at: 877-453-6686.

We are sorry to hear that you are having issues with the audio within your Lenovo Yoga C940-14 4K model number 81Q90041US. First, be sure you have the latest version of Windows 10 on the computer, then update all of the BIOS files and drivers up to that latest version of Windows 10. You can easily accomplish this by scanning the computer with the Lenovo Utility software available on this computer. This system has Lenovo utilities installed to help maintain the health of the device and keep the operating system software up to date. Type "Lenovo Vantage" in the Cortana Search window (if Lenovo Vantage is not installed on your device, you can download the APP and install it now). Select Lenovo Vantage from the list. In the window that opens, click on "Health and Support". In the expanded menu, select "Hardware Scan" In the window that opens, select "Run Quick Tests". This will scan your entire system for errors. Follow any directions that may pop up. If the problem continues after this scan, now click on "System Update". First select Windows update from the menu. Scan your system to be sure you have the latest version of Windows 10. Once that scan is complete, select "Additional Updates". This will scan your device to be sure there are no new BIOS/Driver updates needed. Follow any instructions that may pop up. If your computer is up to date, but the audio issue continues, then be sure any software you installed is compatible with Windows 10. There is no need to install Microsoft Office software. The software is already part of the operating system, you just need to activate the software with a purchased product key. If you have installed a copy of Microsoft Office, this is conflicting with the existing copy on the system and this will slow your system down. If you have installed a 3rd party anti-virus program, be sure that Windows Defender is turned off and that the trial version of McAfee Anti-Virus software is uninstalled. There can only be one anti-virus program on the system. You may need to restore your system to original factory default settings if any of the programming errors have occurred. You can do that by typing "restore" in the Cortana search window. Just click on the magnifying glass icon at the bottom left of your Windows 10 Desktop. Click on "Reset This PC" Then click on "Get Started" and follow the on screen directions to restore to factory defaults. If there is no incompatible software installed and the audio issue continues, a reset of the computer back to original factory settings may correct the problem. Be sure to back up all files and you will need to re-install any programs you added to the computer after the factory reset. Here is a link to recovery options within Windows 10:  https://support.microsoft.com/en-us/help/12415. If you some reason you can not boot the computer to perform the factory reset, this system is equipped with OneKey Recovery System. There is a very small pin hole on the bottom left side of the device, right near the bottom left corner on the cooling vent on the bottom of the device. You will need a pin to push this reset button. Plug the device in. Let the battery charge for about 15 minutes. Push the reset button. The system should boot to a choice screen where you can choose "Restore To Factory Default". Select this. It will delete everything from the hard drive except the original factory install of the operating system. You will need to reinstall all programs and files after the reset. If you don't have copies of the files, try to make one before you restore by selecting "Boot to desktop" and trying to back up your files. If the problem persists after the factory reset, we recommend you contact Lenovo Tech Support at: 877-453-6686.