User Account Control (UAC) was a feature first introduced by Microsoft in Windows Vista. Designed to protect your machine against hackers and malicious software, UAC alerted PC users any time a program tried to make some kind of change to a computer. However, many Windows users complained the feature was intrusive and became annoying by constantly nagging and asking for permission before software could make changes. When Windows decides your permission is needed, the desktop is dimmed and a dialogue box appears asking you to approve or deny the request. You'll find you are unable to complete any other task on your PC until

With this in mind, Microsoft has made the feature "less intrusive and more flexible" in Windows 7 as fewer programs and tasks in the latest iteration of the Windows operating system require you're attention. You can select from four different levels of UAC. Here's how to adjust the UAC settings in Windows 7.

Step one
From the Start menu, open the Control Panel.

Step two
Select the System and Security option and then choose Change User Account Control Settings.

Step three
Use the vertical slider to select one of the four UAC options that range from Always Notify, which see a user alerted every single time a program tries to make a change to your machine or Windows, to Never Notify, which will not alert you no matter what changes are made. The default setting is Notify me only when programs try to make changes to my PC (the second highest level). Once you've selected the relevant option, press Ok to apply the changes.