Learn how to use function VLOOKUP in Excel to find data in a table or range by row. Our step-by-step guide makes vlookup in excel easy and efficient.

Learn how to access Windows device security settings in Windows Security to help protect your device from malicious software.

Learn why it's important to have a backup, and how Windows Backup can help you keep your files and settings safe.

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

Updates to the default screen and sleep settings now help you use energy more efficiently and extend battery life. You can find efficiency settings in Windows 11 at Settings > System > Power & battery.. For a guided walkthrough of how each of the power and battery settings can improve your device's performance, click the button to open the Get Help app:

Here's how to change the size of text, images, and apps in Windows. To change your display in Windows, select Start > Settings > Accessibility > Text size.To make only the text on your screen larger, adjust the slider next to Text size.To make everything larger, including images and apps, select Display , and then choose an option from the drop-down menu next to Scale.

Learn what you can do if you're not receiving account aign-in verification codes.

Learn how to change the power mode on your Windows PC to preserve your battery, limit notifications, and background activity.

Learn how to turn on device encryption, or standard BitLocker encryption in Windows.

Learn about the recovery options in Windows. Find out how to reset your PC, go back to a previous version of Windows, or use media to reinstall Windows.