mikereid,
Do you have a record/memory of the files you deleted? (Names, locations? Deletion always a bad first move. No options following.)
For restoring from the chest, the correct procedure is to start Avast, then when the GUI is up, open the chest, right click each file, rescan it, and, if clean, right click again, select "restore".
That what you're doing?
Why your internet stopped working is related to the deleted files, most likely. So if you can find the names ( of the files, not the detections,) that would help.
jaikrishna,
Didn't it occur to you when you got thousands of detections that something might not be quite right?
I mean, sorry, but there has to be a little common sense here, somewhere?