A screenshot of the Avast Alert window with the Details option selected might help.
- Attaching Images to your post - When you Click the Reply button it opens a text window for you to post your comment (reply or post).
Click the Preview button, that shows what you have input and expands it to include 'Attachments and other options'. Click that it further expands, here you can attach images, etc. at the bottom of your post.
See my attached image, click to expand.
You say "this is one hell of a virus that won't go away" are there any symptoms of a virus (I suspect not) ?
- With a resident (on-access) scanner the need for on-demand scans is much depreciated. For the most part dormant/inert files are being scanned, the other active files are going to be scanned by the resident shields when they are activated.
So if you had said virus and it was active - then the File System Shield should have alerted.