Calculate the difference between two dates. Use the DATEDIF function when you want to calculate the difference between two dates. First put a start date in a cell, and an end date in another. Then type a formula like one of the following.

Get Microsoft account help. Manage your personal account from a single dashboard, including payment information, purchases, subscriptions, and more. Go to your dashboard. You can use a Microsoft account, or a work or school account to sign into your Windows device.

To change the refresh rate. Select Start > Settings > System > Display > Advanced display . Next to Choose a refresh rate, select the rate you want. The refresh rates that appear depend on your display and what it supports. Select laptops and external displays will support higher refresh rates.

Text-to-speech (TTS) is the ability of your computer to play back written text as spoken words. Depending upon your configuration and installed TTS engines, you can hear most text that appears on your screen in Word, Outlook, PowerPoint, and OneNote.

How to prepare your Surface for service. Surface warranty: Frequently asked questions. Set up your Surface after service. Service centers for in-person support. Learn how the service process for Microsoft Surface works and how to request service online if your Surface needs repair.