Finita la scansione con Combofix, segui queste indicazioni:
Avvia OTL.

Sotto "Custom Scans\Fixes " copia-incolla questo codice: (non copiare la parola codice )

codice:
:OTL
O2 - BHO: (no name) - {201f27d4-3704-41d6-89c1-aa35e39143ed} - No CLSID value found.
O2 - BHO: (no name) - {B164E929-A1B6-4A06-B104-2CD0E90A88FF} - No CLSID value found.
O2 - BHO: (Java(tm) Plug-In 2 SSV Helper) - {DBC80044-A445-435b-BC74-9C25C1C588A9} - Reg Error: Value error. File not found
O3 - HKU\S-1-5-21-1214440339-1229272821-1606980848-1003\..\Toolbar\WebBrowser: (no name) - {4E7BD74F-2B8D-469E-9FA5-A33DE8DBE931} - No CLSID value found.
O3 - HKU\S-1-5-21-1214440339-1229272821-1606980848-1003\..\Toolbar\WebBrowser: (no name) - {EE2AC4E5-B0B0-4EC6-88A9-BCA1A32AB107} - No CLSID value found.
O16 - DPF: {6414512B-B978-451D-A0D8-FCFDF33E833C} Reg Error: Value error. (WUWebControl Class)
[2012/01/03 18.29.07 | 000,014,664 | ---- | C] (McAfee, Inc.) -- C:\WINDOWS\stinger.sys
[2011/12/23 08.56.48 | 000,000,000 | ---D | C] -- C:\Programmi\Spybot - Search & Destroy
[2009/10/21 18.41.11 | 000,000,000 | ---D | M] -- C:\Documents and Settings\All Users\Dati applicazioni\avg9
[2011/07/20 17.31.07 | 000,000,000 | ---D | M] -- C:\Documents and Settings\pc\Dati applicazioni\OpenCandy
@Alternate Data Stream - 97 bytes -> C:\Documents and Settings\All Users\Dati applicazioni\TEMP:2A81F9CE
@Alternate Data Stream - 148 bytes -> C:\Documents and Settings\All Users\Dati applicazioni\TEMP:CB0AACC9

:commands
[purity]
[emptytemp]
[Emptyjava]
[RESETHOSTS]
[EMPTYFLASH]
[Reboot]
Clicca sul pulsante RUN FIX .
Lascia fare la scansione senza interferire.
Il pc si riavvierà

Posta il log.