Posto qui sotto il log di avenger:

Logfile of The Avenger version 1, by Swandog46
Running from registry key:
\Registry\Machine\System\CurrentControlSet\Service s\usmfcixy

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Script file located at: \??\C:\WINDOWS\system32\xdireqkx.txt
Script file opened successfully.

Script file read successfully

Backups directory opened successfully at C:\Avenger

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Beginning to process script file:

Folder C:\WINDOWS\Temp deleted successfully.

Completed script processing.

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Finished! Terminate.

Per adesso sembra funzionare. Grazie MILLE!
Ciao.