At the salon, Avi's pc infected with virus, detected by mse. But without the suggested windows defender offline by mse, mse's cleaning is not enough.
Kaspersky rescue disk 10 on usb solved the problem. Though it took me nearly 3 hours to come to this solution. Shhh.
Using kaspersky's iso to usb utility, i made the usb boot which could update online to the latest definition, and without tarrying any longer after first virus detection: pihar.c (not alureon), disinfected it, since deletion failed, restarted, mse reported green.