How to update the win7 system?

Sometimes the computer system is updated, but I don't know where it is, how to update it becomes a problem. Now let me introduce how I updated it. I hope I can help you.
Method/Step
1. Open the computer.
2. Open the control panel.
3. Click the category. Open the system and security.
4. Check the update.
5. Point update, update may point time. It is recommended to update when eating. Don't forget to plug in the power to ensure that you do not shut down.
6, after installation. Restart the computer.
Note
Computer power remember to plug in .
Update time varies. Try to update when free.
The above is how to update the win7 system, the operation is very simple, everyone learned? I hope to help everyone!