How to Take a Screenshot in Windows
Capture the whole screen, one window, or a selected region.
6 min · EasyAn operating system is the software that manages a computer's hardware, applications, files and user sessions.
Practical operating systems guides and troubleshooting.
Choose the family and version installed on the computer you are supporting. Windows, Linux and Windows Server use different tools and permission models. A familiar-looking desktop does not guarantee that a command or setting applies to that version.
Record the operating-system version, the problem and any recent change. Use a system-information guide if the version is unclear. Follow the guide's supported platforms and expected result before trying the same instructions on another machine.