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

Learn how to run Windows Update Troubleshooter to resolve errors downloading or installing Windows updates.

Learn how to improve the clarity of text and images displayed on your screen by changing the screen resolution of your monitor.

Get the steps for setting up dual monitors on your Windows PC.

You can easily insert a check mark (also known as a "tick mark") in Word, Outlook, Excel, or PowerPoint. These marks are static symbols. If you're looking for an interactive check box that you can click to check or uncheck, see: Add a check box or option button (Excel) or Make a checklist in Word. In your file, place the cursor where you want to insert the symbol.

Windows 設定アプリを使用して、デスクトップの背景と色を変更します。

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 manage your Microsoft devices. Add, remove, register, or rename a device on your Microsoft account.

Learn how to connect a Bluetooth device in Windows and adjust Bluetooth pairing settings.

Learn how to add a printer or scanner in Windows. If your printer connects by a wire, plug it into your device. It'll connect automatically, your PC will download the right drivers, and you can use it right away.