Installing chinese input in Windows used to be a troublesome task, but since google released google pinyin input software, it is much simpler now..
If your pc can't display chinese characters please refer to this guide.
1) Download 谷歌拼音输入法 from website.
2) Install the software and proceed with the normal settings.
3) After installation complete you may switch from English to Chinese input mode by pressing Alt+Shift key together. You may change the shortcut key for this in the google pinyin settings menu.