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 /
1, turn on the computer.

2, open the control panel.

3, the sort of Open systems and security.

4, check for updates.

5, point update, the update may take some time. I recommend dinner updated. Do not forget to plug in the power shutdown guarantee.

6, installing restart the computer to can.

precautions remember
computer power plug.
update varying lengths of time. try to update is free time.
above is how win7 system updates the method described, the operation is very simple Have you learned it? I hope I can help you!