Learn how Smart charging in Windows can help your battery last longer over time.

Defragment your Windows 10 PC. Optimizing your drives can help your PC run smoother and boot up faster.

Information on how to download the Microsoft Mouse & Keyboard Center.

Learn how to check for, download, and install KB 2919355, an update for Windows 8.1 and Windows RT 8.1.

About digital signatures and certificates in Office, and buying a digital certificate from a certificate authority or create your own.

Learn how to remove malware from your PC. Use Microsoft Defender Antivirus in Windows 10 or Windows 11 to scan your PC for malware, viruses, or other threats.

Learn how to change the refresh rate for your display in Windows to determine how smoothly motion appears on your screen.

Learn how to access the Control Panel in Windows for managing your system settings and programs.

The Calculator app for Windows is a touch-friendly version of the desktop calculator in previous versions of Windows. You can open multiple calculators at the same time in resizable windows on the desktop and switch between Standard, Scientific, Graphing, Programmer, Date calculation, and Converter modes.. To get started, select the Start button, and then select Calculator in the list of apps.

Learn how to get Windows Media Player 12 for Windows 10, Windows 8.1, and Windows 7.