Here's what happened. Today Norton showed me that auto protect blocked twice Backdoor.Tidserv, filename smthg: sprquftivn.tmp. After that when I try to do a full system scan it says no viruses, spyware or other risks were found, but it scans like only 5000 files or so. Custom scan doesn't work. Says the same thing and 0 files scan.
I tried scanning in safe mode: same result.
Downloaded Malwarebytes' Anti-Malware finds some trojans but even after removal norton still won't work.
I have already read many topics on this, but still haven't found the right answer.
so....HELP!