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Running a Boot-Time Scan in AVG AntiVirus

If you suspect that your PC contains malware, AVG Internet Security and AVG AntiVirus FREE allow you to schedule a Boot-Time Scan to run the next time your computer starts. It scans for known types of malware and removes threats before the operating system and other services run.

Boot-Time Scan is an advanced feature designed to use when you suspect a threat in the system, and usually takes some time to run. It does not run automatically or on a regular basis. You need to manually schedule it to run when needed.

Before scheduling and running a Boot-Time Scan, you need to specify how Boot-Time Scan will respond to detected threats. This article also contains information about general Boot-Time Scan settings, which allow you to specify scan sensitivity, and what issue types are detected by Boot-Time Scan.

If malware prevents AVG from scheduling a Boot-Time Scan in normal mode, you can schedule Boot-Time Scan to run in Safe Mode. For instructions, refer to the following article:

Specify response to threats

To specify which action(s) Boot-Time Scan applies when it detects a threat, you need to either enable or disable automatic actions. When you use automatic actions, Boot-Time Scan applies your specified action(s) automatically to all detected threats. Alternatively, when you disable automatic actions, you are prompted during the Boot-Time Scan to manually select an action for each detected threat.

To specify how Boot-Time Scan will respond to detected threats:

  1. Open the AVG user interface and click the icon (three dots) next to Run Smart Scan.
  2. Hover the cursor over Boot-Time Scan and click Settings (the gear icon).
  3. Ensure the Boot-time Scan tab is selected, then scroll down to Perform automatic actions during this scan. Either untick this option to disable automatic actions, or ensure this option is ticked to enable automatic actions.
  4. If you enabled automatic actions in the previous step, select your preferred automatic action:
    • Fix automatically (recommended): AVG attempts to repair the file. If unsuccessful, it moves the file to the Quarantine or deletes the file if neither action is successful.
    • Move file to Quarantine: AVG sends the file to Quarantine, where it cannot harm your system.
    • Delete file: AVG permanently removes the file from your PC.

When you run Boot-Time Scan, AVG responds to detected threats according to your preferences.

Use caution when configuring Boot-Time Scan to take automatic actions. In the event that a critical system file is incorrectly identified as malware due to a false positive issue, Boot-Time Scan may delete the file if an automatic action is set up. Though AVG has a number of measures designed to prevent such issues, false positives may occur.

Schedule Boot-Time Scan

After specifying how Boot-Time Scan will respond to detected threats, follow the instructions below to schedule a Boot-Time Scan:

  1. Open the AVG user interface and click the icon (three dots) next to Run Smart Scan.
  2. Click Boot-Time Scan.
  3. Click Install definitions, then click Run On Next PC Reboot to run the scan during the next system restart.

Boot-Time Scan is scheduled and will run when you next restart your PC. To cancel the scan, click the icon (three dots) next to Run Smart Scan, select Boot-Time Scan, then click Cancel scheduled scan.

When you click Install definitions on the Boot-Time Scan screen, AVG downloads all virus definitions from a cloud database. If you skip installing specialized definitions, Boot-Time Scan scans your PC based only on the latest virus definitions that are already downloaded. After clicking Install definitions, you are not offered this option again.

Run Boot-Time Scan

  1. Ensure Boot-Time Scan is scheduled, then restart your PC. A Boot-Time Scan progress screen appears as Windows loads.
  2. For any detected threat, AVG applies the action specified in your application settings. If automatic responses are enabled, AVG resolves any issues with no actions required from you. If you disabled automatic responses, manually select which action to take.

The scan usually takes several minutes, but the duration varies depending on the speed of your system and the number of files to be scanned. When the scan is completed or skipped, Windows continues booting up.

To skip the scan, press the Esc key on your keyboard.

Configure settings

In addition to specifying how Boot-Time Scan responds to detected threats, you can also specify which types of programs and files or areas of your PC are scanned.

  1. Open the AVG user interface and click the icon (three dots) next to Run Smart Scan.
  2. Hover the cursor over Boot-Time Scan and click Settings (the gear icon).
  3. Ensure the Boot-time Scan tab is selected, then manage the following aspects of your scan:
    • Sensitivity: use the slider to indicate your preferred level of heuristic sensitivity. Heuristics enable AVG to detect unknown malware by analyzing code for commands that may indicate malicious intent.
    • Scan for potentially unwanted programs (PUPs): ensure this box is ticked if you want Boot-Time Scan to look for programs that are stealthily downloaded with other programs and typically perform unwanted activity.
    • Unpack archive files: ensure this box is ticked if you want AVG to unpack compressed files during the scan.
    • Scan areas: select All Harddisks or System drive to specify which data space you want the scan to analyze.
    • Auto start programs: allows AVG to scan programs that automatically start when you turn on your computer.
    • Actions: configure automatic responses to any threats detected by Boot-Time Scan.
  • AVG Internet Security 20.x
  • AVG AntiVirus FREE 20.x
  • Microsoft Windows 10 Home / Pro / Enterprise / Education - 32 / 64-bit
  • Microsoft Windows 8.1 / Pro / Enterprise - 32 / 64-bit
  • Microsoft Windows 8 / Pro / Enterprise - 32 / 64-bit
  • Microsoft Windows 7 Home Basic / Home Premium / Professional / Enterprise / Ultimate - Service Pack 1, 32 / 64-bit

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