Packard Bell DOT S series User Manual page 70

Caution:
similar functionality and will disable Windows Defender in order
to improve system performance.
User Account Control
User Accounts
The
changes to your computer. User Accounts will ask you for permission
or an administrator password before performing actions that could
potentially affect your computer's operation or that change settings
that affect other users. When you see a User Account message, read it
carefully, and then make sure the name of the action or program
that's about to start is one that you intended to start.
By verifying these actions before they start, User Account settings can
help prevent malicious software (malware) and spyware from
installing or making changes to your computer without permission.
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Please note that most security software suites provide
control panel can help prevent unauthorized