aVast 5 Full Boot Scan Deleted Everything

A full boot scan was done and some 1300 files we found infected. I got the machine today so don’t know what action the user took but it appears everything has been deleted and by that I mean things like Wordpad, notepad, Word, etc, etc. Windows actually still runs in Safe Mode but aVast 5 doesn’t so I can’t seem to find any Virus Chest info, logs, etc.

Surely there is a physical location in 5 where it would have the log, the chest, etc?

Was there a bad update because I find it hard to fathom this machine had over 13400 infected files yet MalwareBytes and other apps found nothing.

From what I know, the previous update issue was appeased. It is possible that those files were infected by a polymorphic virus.

Surely there is a physical location in 5 where it would have the log, the chest, etc?

The location of quarantine, even if found, is locked.

[EDIT: Typo]