I agree that my computer is not yet in good health; there seems to be some combination of two (apparently corrupted) programs that usually get loaded at startup, that will crash it. My computer-smart employee is slowly isolating which combinations do not crash it and which do. In the meantime it runs as is, with some six or more of these things all disabled-on-startup. I am not as knowledgeable as he is.
I have scanned the entire machine and all my memory-sticks with the latest NOD32 (and as well my employee used something called AVIRA PC-Cleaner), and everyone reports clean since those five original nasties were removed.
I agree that saving my files and formatting the drive would be a clean start-over, but I have many little utility-programs that would be lost in formatting; replacing all them would be an inconvenience I seek to avoid; formatting is a last resort if I cannot clean and repair the present setup.
I had the 2013 version of NOD 23 and renewed the license in 2015 so I assume I had the latest version. In the course of replacing the corrupted NOD32, I downloaded a recent 30-day free trial, so I surely have the latest version. I then put my paid-for registration-data into it and that was accepted So I think my NOD 32 is up-to-date.
As for NOD32 being updated every 20 minutes, I see the occasional update-report-windows popping-up from time-to-time, and yes, that is one of the things I like about it.
Nonetheless, there WAS the Fake-MacAfee window that popped up, asking me to "update MacAfee", and THAT was not something in the NOD32 updates, and whatever-slid-in was not blocked by my freshly-updated NOD32.
I hope now it will be, and that the user-community knows better to watch for pop-up windows appearing to belong to a program they know and trust.