1. Where did you download the AIS installer from?

Avast Installer File Properties

  1. What are the file size and dates on the installer?
  2. What is the name of the digital signer and timestamp on the installer in the Properties—Digital Signature section of File Properties?
  3. What does it say after “Copyright”

New Drive

  1. SSD or HDD?

  2. Is it internal or external?

  3. Who is the manufacturer and what is the model?

  4. Sorry to ask this, not accusing you of anything, but is your copy of Windows valid?

  5. Have you run a Windows update since reinstalling Windows?

  6. Did you try and run sfc /scannow?