Lenovo - Yoga A940 27" Touch-Screen All-In-One - Intel Core i7 - 16GB Memory - 1TB Hard Drive + 256GB Solid State Drive - Grey

We are sorry to hear that you are having issues with your Lenovo Yoga A940-27 All-In-One system. Resetting the computer back to original factory settings may correct the issue you describe. Since you can not boot the system, ensure that your computer is connected to ac power during the recovery process.
The Windows recovery environment on your computer operates independently from the Windows 10 operating system. It enables you to recover or repair the operating system even if the Windows 10 operating system fails to start.
After two consecutive failed boot attempts, the Windows recovery environment starts automatically. Then, you can choose repair and recovery options by following the on-screen instructions. Here is a link to more Windows 10 Recovery options:
https://support.microsoft.com/en-us/help/12415/windows-10-recovery-options. Once you have the system 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.

Thanks for choosing the Lenovo IdeaCentre A940 All-In-One. We are pleased to hear that when you were using it the features and performance of the A940 All-In-One were meeting your computing needs so well!

Once again, thank you for choosing the Lenovo IdeaCentre Yoga A940-27. 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. 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 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 A940-27 All-In-One system. The heart of the IdeaCentre A940-27 AIO is the Windows 10 Operating System. With regard to learning your way around Windows 10, you may want to try YouTube.com (just type that address in your browser address window). There are hundreds for free instructional videos there about Windows 10. Just type Windows 10 Introduction in to the YouTube search window. You can watch free videos there that will show you the basics all the way up to tips and tricks videos and they're all free. Tilt the Yoga A940's 27-inch display to 25-degree with a rotating hinge that provides stability for drawing and writing with a digital pen. The innovative dual hinge design makes it easier to slide into drafting mode with one hand- and palm-rejection technology provides a pen-to-paper experience whether you’re sketching out your next project or tweaking details in Lightroom. Experience stunning color, contrast, and detail in 4K resolution on a 27-inch wide-angle display optimized with Dolby Vision HDR. The Yoga A940 also offers powerful sound in every mode, with the user-facing Dolby Atmos Speaker System. Encased underneath the display is a second set of speakers, designed to maximize sound even when the display is tilted into drafting mode. The Yoga A940 offers premium 8th Generation Intel Core i7 processing with six processor cores for intelligent, ultrafast performance. Combined with powerful AMD Radeon RX560 discrete graphics, this all-in-one PC delivers lightning-fast responsiveness whether you’re editing or creating content.

We are sorry to hear that you are having issues with your Lenovo Yoga A940-27 All-In-One system. Windows 10 Home should not freeze or crash. 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.