Scanners cannot find the virus - are there alternative scanning technologies?

Question

Malware

Leading antivirus/scanners (Kaspersky, Bitdefender, AVG, Avira, SuperAntiSpyware, MalwareBytes, ... etc. from 2k10, etc.) and AVZ cannot detect a virus in Windows 7 x64 that manifests itself in that it does not allow you to run antiviruses, msconfig, Office, etc.
(File not found - immediately or after a short delay) many simple programs run. The scan is not working.
Applications suddenly became inaccessible to launch either by an administrator or by a regular user in an infected OS. From other installations - a flash drive, another disk - start without problems.
Scanning was performed both from USB and from an OS installation specially made on another partition of another disk.
Maybe some kind of virus-type scanners have appeared - they prescribe themselves to launch an infected Windows, or allow you to run an infected Windows in an emulator, etc. so that the antivirus code is still executed in it?
What's new that allows you to catch such an infection in the world of crooked antiviruses justifying their stupidity by rebranding a la rootkits / superrootkits?
The question, among other things, is how to run the antivirus code under an infected OS?

Answer 1

Remove HDD, connect to another computer, scan...

Answer 2

I doubt it's not a virus.
Usually a virus has a target. And usually this goal is accompanied by the fact that the virus does not allow itself to be detected just like that.
Most likely, the problem is in some kind of system software, system registry, hardware, user rights (one of them).

Answer 3

Scanners cannot find the virus - are there alternative scanning technologies?

There is only one scanning technology - reading a file from disk or memory and checking what was read for a match with a signature from the database.

cannot detect a virus in Windows 7 x64, which manifests itself in that it does not allow antiviruses to run

Perhaps this is not a virus, but banal system settings.
You need to understand that any virus scan is effective only if the scanner is running on an uninfected OS.
Therefore, scanning is launched by booting from a special boot disk with a scanner.

Answer 4

Well, in principle, you can try to see it yourself ... Go into safe mode and climb into the system there. files. But in general, why not just format the disk with the system and install Windows again? Make a backup of the data you need and go ahead. It is easier to remove everything, including the virus, than to look for the same virus (a good rootkit) among all this.