Disabling User Account Control
The User Account Control (In short UAC) is a security feature that designed to protect your operating system from viruses, trojan horses and even from yourself. It runs in the background and looks for actions that it deemed to be dangerous.
Usually when you try to install new software, or change something through Control Panel you will get a pop up window that will alert you that something might be happening in your computer.

In theory it’s a great feature but in practice it will slow you down and annoy you, which is probably why you googled ‘how to disable UAC’ and got here.
To turn off User Account Control open Control Panel, if you dont know how to access the Control Panel you need to read this guide first: Accessing Control Panel in Windows 7.
After you have the Control Panel in front of you, navigate into System and Security

From there navigate into the Action Center (you can click the link Change User Account Control Settings and skip the next stage)

On the left navigation panel, click the link Change User Account Control Settings

Now move the slider to the bottom which will set the setting to never notify, and click OK.

You will get the UAC alert window for the last time, it will ask you if you want to allow the change in settings. Click Yes, you might be prompted for your computer administrator’s password, if so, provide it.

That’s it, from now on UAC is disabled.