avast will only remove infected files
infected files detected are given a malware name…does it give a malware name?

if avast just say the file is corrupted, then it is just a scan error report and not a infection so nothing avast will do anything about…it is just telling you it could not scan it and the reason why

and why do you do a boot scan…it is not meant to be used as a regular scanner, only if avast detect something it has problems removing