My desktop was working perfectly until yesterday when I suddenly realized there were unusual add-ins.
Upon checking, I found I lost my Norton360 again and that was in the evening.
I tried to sign into my Norton account & it did not response.
Then, I made a complain to Norton360 Support and switched off the computer.
This morning, I woke up early to sort it out with Norton Australia. I expect someone from Norton Australia to remotely control my computer to get it going.
But after switching on just now, I found my Norton360 icon again....all in working mode.
I really don't know what happened to my computer during the night.