That will depend on the APPs you will need to use on the tablet to read the file types you want. The Lenovo Tab M10 Plus Tablet, model number ZA5T0300US, ships with the Android 9.0 Operating System and is compatible with Google Play Store APPs. We recommend you check with the specific APPs software publisher's web site of the APP you will be using to read the files you will be loading to this tablet, for their compatibility with the Android 9.0 operating system and the minimum/recommended hardware requirements (Is a Graphics card required, the processor speed and the minimum required system RAM and the minimum available hard drive space) to run their program, then compare those requirements to this system's configuration.

Yes there are several way to turn off your screen within Windows 10. Here is a link to more information: https://www.maketecheasier.com/turn-off-windows-screen/

The Lenovo Legion Tower 5 AMD Gaming Desktop Computer, model number 90RB000DUS, measures: 16.18 x 8.07 x 15.59 inches.

We are sorry to hear that you are having issues with your Intel Evo-Certified, Lenovo Yoga 7i-14, model number 82BH0006US. You mention that the screen goes black, mainly when you are using the Microsoft Word APP. Be sure that you have not installed a second copy of Microsoft Word onto the computer. There is already a copy of Microsoft Office 365 installed on this computer as a part of the Windows 10 Operating System. If you already have a subscription to Office 365, you can just sign in using your current User Name and Password within the copy of Office 365 already installed - No additional software need be installed. If you are activating a new Office 365 subscription or if you have purchased a new Microsoft Office License, you do not need to install any software. Just go into the installed copy of Office 365 within Windows 10, input the Product Code that comes with your new License and you will be able to activate your license that way. If you have installed a second copy of the Office software, you will need to uninstall that copy to avoid having the black screen issue continue. Here is a link to instructions for uninstalling a program from Windows 10: https://support.microsoft.com/en-us/windows/uninstall-or-remove-apps-and-programs-in-windows-10-4b55f974-2cc6-2d2b-d092-5905080eaf98. Restart your computer after the uninstall and the black screen issue when you open Microsoft Word should be gone. If the issue does continue, we recommend you contact Lenovo Tech Support for additional help at: 877-453-6686.