To activate an Office 2007 program, you must enter your 25-digit product key, if you haven't already done so during Setup.

Troubleshoot issues that occur when setting up external monitors. If you are trying to set up an external monitor and it’s not working, press the Windows logo key + P to make sure that the Extend option is selected. If the Extend option is selected, try the following troubleshooting tips.

If you're having problems with your Surface Pro model, Surface 3, Surface Studio, or Surface Book, try fresh start, restoring, refreshing, or resetting it to its factory settings.

Learn about Windows 11 minimum system requirements and how to assess your upgrade eligibility.

Learn how to activate Office pre-installed on new Windows 10 PCs or with a new product key.

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.

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

Find your Wi-Fi network password in Windows, so you can connect to your Wi-Fi network on other devices.

If you loved the free solitaire games from earlier versions of Windows, we've wrapped them all up in one convenient app, the Microsoft Solitaire Collection.

Email messages that you receive can be saved as a file on your computer, or a message that you are composing can be saved as a draft and finished later.