So many doubts about automatic versus manual update. I am always for first one, especially in 10+ PC environment.
This Windows automatic update tutorial is applicable on Windows 7.
First select Start button on your Windows and select Control Panel (Slide 1.).
On Control Panel page select Windows Update (Slide 2.).
On Windows Update page select Change settings and then verify appropriate options regarding requirements (Slide 3 & 4). When you finish you setup select OK.
Please take your update policy very seriously. It could save your PC and operating system from serious damages or even save your data. You must be careful especially if you work in demanding environments full of security challenges. Due to lack of updates and fixes your operating system can be exposed. Thus you sensitive data could be damaged or stolen.
I hope that this tutorial was informative to you and thank you for visiting this website.