Customer Ratings & Reviews

Thank you for choosing the Lenovo Yoga C940-14 4K model. You can manually control the performance of the Yoga C940-14 to reduce heat. You can use Lenovo Q-Control to manually control fan performance and system workload for heat: ( Fn + Q ) option to change the fan-system workload. If the issue continues, we recommend you call Lenovo Tech Support at: 877-453-6686.

You can use Lenovo Q-Control to manually control fan and system performance: ( Fn + Q ) option to change the fan by undervolting the processor. If the issue continues, we recommend you call Lenovo Tech Support at: 877-453-6686.

Thank you for choosing the Lenovo Yoga C940-14 4 K model. We are pleased to hear that the Yoga C940-14 4K model meets your computing needs so well.

Thank you for choosing the Lenovo Yoga C940-14 4K model. We are pleased to hear that the features and performance of the Yoga C940-14 4K model meets your computing needs so well. 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 number 81Q90041US. Try resetting your computer back to original factory settings to clear any software conflicts. 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 of 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. Once you have the computer reset, 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.

Once again, thank you for choosing the Lenovo Yoga C940-14 4K model. You can keep your computer running at its best by keeping the Windows 10 Operating System and all supporting BIOS files and drivers up to date. You can easily accomplish this by scanning the computer with the Lenovo Utility software available on this computer. Just 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 you ever need additional help with your Lenovo computer, we recommend you call Lenovo Tech Support at: 877-453-6686 for additional help.

Thank you for choosing the Lenovo Yoga C940-14 4K model. We are pleased to hear that the Yoga C940-14 4K model meets your computing needs so well.

The Lenovo Yoga C940-14 4K model will boot from off to the Windows 10 Desktop in less than 10-seconds. If you are getting slower boot times, 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.

Thank you for choosing the Lenovo Yoga C940-14 4K model. We are pleased to hear that the value, features and performance of the Yoga C940-14 4K model. 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.

Thank you for choosing the Lenovo Yoga C940-14 4K model. 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.

Thank you for choosing the Lenovo Yoga C940-14 4K. 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 and we are glad to hear that a Lenovo certified technician is assisting you. While the technician is focusing on the hardware, 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. The technician is looking for hardware and BIOS/driver software errors. User installed incompatible software will not so up for the technician.

Once again, thank you for choosing the Lenovo Yoga C940-14 4K model. You can keep your computer running at its best by keeping the Windows 10 Operating System and all supporting BIOS files and drivers up to date. You can easily accomplish this by scanning the computer with the Lenovo Utility software available on this computer. Just 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 you ever need additional help with your Lenovo computer, we recommend you call Lenovo Tech Support at: 877-453-6686 for additional help.

Thank you for choosing the Lenovo Yoga C940-14 4K model. You mention the audio volume automatically decreasing when on battery and the battery level reaches 20-percent or less. This is Battery Saver Mode. This software automatically conserves non-essential computer power-consuming activities to prolong the battery life when at a predetermined battery level, set by you. Here is a link to information about setting up or turning off Battery Saver Mode on your Lenovo Yoga C940-14 4K:  https://support.lenovo.com/us/en/solutions/ht117144

The Lenovo Yoga C940-14 4K model ships with a 4CELL_60WH_INTERNAL, Lithium Polymer Battery, with a battery life of up to 10 hours, depending on the work the device is performing. If you are seeing over-heating and short battery life, 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 your Lenovo Yoga C940-14 4K model. 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.