Here's what I mean.
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So how do we avoid this? Below are the simple steps on how to disable it.
Go to Control Panel and if your window is displayed on Classic View then look for an icon that says User Accounts.

From here, you will have the option to click on Turn UAC On and Off

You can disable UAC just by simply removing the check box on the item just like the picture below.

Although UAC has its purpose, unfortunately i couldn't grasp it right now. All i know is that its a nuisance and it should be out of my computer. At the mean time, i don't worry about this much since no one uses my computer except me. Lol...