Avast is an antivirus program that scans your computer for virus-infected files. If you are getting the Avast boot scan error 42125 while scanning your computer, there might be a problem with installing the System Restore volume.
To fix this error, keep reading the instructions given below.
- On your Windows computer, click the Start menu available at the bottom-left corner of the desktop screen.
- Type ‘control panel’ in the search panel and press the Enter key.
- From the search result, double-click the Control Panel app to launch it.
- Alternatively, press the Windows + R shortcut keys to launch the Run dialog box.
- Type ‘control’ in the Run dialog box and press the Enter key to open the Control Panel.
- Click the System tab in the Control Panel window and select System Protection from the left-side panel.
- If prompted, enter your administrator password in the required field and click Continue.
- In the System Properties window, click the Configure button under the System Protection tab.
- Select the Turn off system protection option and click OK to disable the System Restore feature.
- Next, restart your computer and open the System Properties window from the Control Panel.
- Click the System Protection tab in the System Properties window.
- Select your device name under the Protection Settings section and click the Configure button.
- Click the Restore system settings and previous versions of files radio button to enable the System Restore feature.
- Click Create and create a system restore point.
- After creating a restore point, restart your computer and rerun the Avast boot scan to check if the error 4125 has been resolved.
- If the Avast Boot Scan Error 42125 persists, uninstall the Avast program from your computer and reinstall a compatible Avast product with the correct installation method.