A scan for viruses and other threats as well as database and application module updates sometimes use up a lot of computer resources and take a long time.

This check box enables / disables power-saving mode on laptop computers, during which virus scan and update tasks are postponed. If necessary, you can update databases and application modules of Kaspersky Free or run a scan for viruses and other threats manually.

If the check box is selected, Kaspersky Free does not run scan or update tasks and does not display notifications when you play games or run applications in full-screen mode.

This check box controls the use of operating system resources by Kaspersky Free.

If this check box is selected, only critical protection components of Kaspersky Free are run at the startup of the operating system. Protection is completely enabled after the operating system loads.

If this check box is cleared, all protection components are run simultaneously when the operating system starts up.

If the check box is selected, whenever the operating system is shut down, Kaspersky Free operates with a focus on scanning files that appear on the drive while the operating system is being restarted. If any of these files are malicious, the application neutralizes them after the operating system is restarted.

Preventing infection during restart does not work if the Block action on threat detection is selected in the File Anti-Virus settings.

When Kaspersky Free runs scan tasks, this may result in increased workload on the CPU and disk subsystems, which affects the performance of other applications. If such a situation occurs, Kaspersky Free can pause scan tasks and free up system resources for the user's applications.

This check box enables / disables the option for pausing scan tasks. This helps to relieve the load on the CPU and disk subsystems.

This check box enables / disables the option to run scan tasks (scanning of system memory, the system partition, or startup objects) and update tasks while the computer is locked or the screensaver is on.

If the computer is running on battery power, Kaspersky Free does not perform tasks when the computer is idle.

If this check box is cleared, Kaspersky Free does not run scan and update tasks while the computer is idle.

This check box enables / disables regular scanning of the operating system for

If this check box is cleared, Kaspersky Free does not perform regular rootkit scans.

Clicking this link opens the Pause File Anti-Virus window. In this window, you can specify a time period during which you want to pause File Anti-Virus. You can also create a list of applications that, when run, will pause File Anti-Virus.