Select your operating system for a guide on how to enable Chinese text input.
Click Add a Language
Select Chinese Simplified
Return back to the language options, and click on Options next to Chinese.
Click Add an input method
Select Microsoft Pinyin
Type pinyin, and select the characters as you type.
Most people who live in mainland China typically install a 3rd-party input method. Google Pinyin Input is very popular.
The Google input method has advantages:The downside is the software must monitor all keystrokes to function, so you need administrator privileges to install it.