Whole Computer Scan
The Whole computer scan is a basic predefined feature that will scan, as it says, virtually everything in your computer: files and folders on all local hard disks, system areas, Registry, disk boot sectors, and memory. The whole computer scan can be launched on demand at any time.
How to scan whole computer
Navigate to AVG Main Screen -> Main Menu Tools -> Scan computer.
How to modify the scan settings
Navigate to AVG Main Screen -> shortcut Scan options -> under Whole computer scan, click the Change scan settings option.