Ho noyayo un rallentamento nel pc in special modo su pagine web (IE7), allego log perLogfile of Trend Micro HijackThis v2.0.2
Scan saved at 13.35.58, on 29/04/2009
Platform: Windows XP SP3 (WinNT 5.01.2600)
MSIE: Internet Explorer v7.00 (7.00.6000.16827)
Boot mode: Normal

Running processes:
C:\WINDOWS\System32\smss.exe
C:\WINDOWS\system32\csrss.exe
C:\WINDOWS\system32\winlogon.exe
C:\WINDOWS\system32\services.exe
C:\WINDOWS\system32\lsass.exe
C:\WINDOWS\system32\Ati2evxx.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\Programmi\Alwil Software\Avast4\aswUpdSv.exe
C:\Programmi\Lavasoft\Ad-Aware\AAWService.exe
C:\WINDOWS\system32\Ati2evxx.exe
C:\Programmi\Alwil Software\Avast4\ashServ.exe
C:\WINDOWS\Explorer.EXE
C:\WINDOWS\system32\spoolsv.exe
C:\Programmi\Creative\SBAudigy2ZS\Surround Mixer\CTSysVol.exe
C:\Programmi\Creative\SBAudigy2ZS\DVDAudio\CTDVDDet.EXE
C:\WINDOWS\system32\CTHELPER.EXE
C:\Programmi\ATI Technologies\ATI Control Panel\atiptaxx.exe
C:\WINDOWS\system32\LVCOMSX.EXE
C:\Programmi\SlySoft\CloneCD\CloneCDTray.exe
C:\Programmi\Microsoft Office\Office12\GrooveMonitor.exe
C:\Programmi\Pinnacle\PCTV Stereo\Remote\Remoterm.exe
C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
C:\Programmi\PC Tools Firewall Plus\FirewallGUI.exe
C:\Programmi\Lavasoft\Ad-Aware\AAWTray.exe
C:\Programmi\Adobe\Photoshop Album Starter Edition\3.2\Apps\apdproxy.exe
C:\Programmi\Spyware Terminator\SpywareTerminatorShield.exe
C:\Programmi\Java\jre6\bin\jusched.exe
C:\Programmi\rnamfler\naomf.exe
C:\WINDOWS\system32\rundll32.exe
C:\Programmi\a-squared Free\a2service.exe
C:\Programmi\File comuni\InstallShield\UpdateService\issch.exe
C:\WINDOWS\system32\ctfmon.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\system32\CTsvcCDA.exe
C:\Programmi\DAP\DAP.EXE
C:\Programmi\Java\jre6\bin\jqs.exe
C:\Programmi\Creative\MediaSource\RemoteControl\RCMan.EXE
C:\Programmi\Innovative Solutions\DriverMax\devices.exe
C:\Programmi\CDBurnerXP\NMSAccessU.exe
C:\Programmi\filehippo.com\UpdateChecker.exe
C:\Programmi\PC Tools Firewall Plus\FWService.exe
C:\Programmi\IObit\Advanced SystemCare 3\AWC.exe
c:\programmi\rnamfler\radprcmp.exe
C:\Programmi\Pinnacle\Shared Files\Programs\Scheduler\PCLEScheduler.exe
C:\Programmi\rnamfler\naofsvc.exe
C:\Programmi\Fastweb\PrintAndFax\FaxMonitor.exe
C:\Programmi\Spyware Terminator\sp_rsser.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\system32\MsPMSPSv.exe
C:\Programmi\Alwil Software\Avast4\ashMaiSv.exe
C:\Programmi\Alwil Software\Avast4\ashWebSv.exe
C:\WINDOWS\system32\wbem\unsecapp.exe
C:\WINDOWS\System32\alg.exe
C:\WINDOWS\system32\wbem\wmiprvse.exe
C:\Programmi\Trend Micro\HijackThis\HijackThis.exe
C:\WINDOWS\system32\wbem\wmiprvse.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.google.it/
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://go.microsoft.com/fwlink/?LinkId=69157
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = http://go.microsoft.com/fwlink/?LinkId=54896
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = http://go.microsoft.com/fwlink/?LinkId=54896
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://go.microsoft.com/fwlink/?LinkId=69157
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant =
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,CustomizeSearch =
R1 - HKCU\Software\Microsoft\Internet Explorer\SearchURL,(Default) = http://www.speedapps.com/search.htm
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Local Page =
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Local Page =
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Collegamenti
O2 - BHO: AcroIEHelperStub - {18DF081C-E8AD-4283-A596-FA578C2EBDC3} - C:\Programmi\File comuni\Adobe\Acrobat\ActiveX\AcroIEHelperShim.dll
O2 - BHO: Skype add-on (mastermind) - {22BF413B-C6D2-4d91-82A9-A0F997BA588C} - C:\Programmi\Skype\Toolbars\Internet Explorer\SkypeIEPlugin.dll
O2 - BHO: Groove GFS Browser Helper - {72853161-30C5-4D22-B7F9-0BBC1D38A37E} - C:\Programmi\Microsoft Office\Office12\GrooveShellExtensions.dll
O2 - BHO: WOT Helper - {C920E44A-7F78-4E64-BDD7-A57026E7FEB7} - C:\Programmi\WOT\WOT.dll
O2 - BHO: Java(tm) Plug-In 2 SSV Helper - {DBC80044-A445-435b-BC74-9C25C1C588A9} - C:\Programmi\Java\jre6\bin\jp2ssv.dll
O2 - BHO: JQSIEStartDetectorImpl - {E7E6F031-17CE-4C07-BC86-EABFE594F69C} - C:\Programmi\Java\jre6\lib\deploy\jqs\ie\jqs_plugin.dll
O3 - Toolbar: WOT - {71576546-354D-41c9-AAE8-31F2EC22BF0D} - C:\Programmi\WOT\WOT.dll
O4 - HKLM\..\Run: [CTSysVol] C:\Programmi\Creative\SBAudigy2ZS\Surround Mixer\CTSysVol.exe /r
O4 - HKLM\..\Run: [CTDVDDET] C:\Programmi\Creative\SBAudigy2ZS\DVDAudio\CTDVDDet.EXE
O4 - HKLM\..\Run: [CTHelper] CTHELPER.EXE
O4 - HKLM\..\Run: [SBDrvDet] C:\Programmi\Creative\SB Drive Det\SBDrvDet.exe /r
O4 - HKLM\..\Run: [UpdReg] C:\WINDOWS\UpdReg.EXE
O4 - HKLM\..\Run: [ATIPTA] C:\Programmi\ATI Technologies\ATI Control Panel\atiptaxx.exe
O4 - HKLM\..\Run: [LVCOMSX] C:\WINDOWS\system32\LVCOMSX.EXE
O4 - HKLM\..\Run: [CloneCDTray] "C:\Programmi\SlySoft\CloneCD\CloneCDTray.exe" /s
O4 - HKLM\..\Run: [GrooveMonitor] "C:\Programmi\Microsoft Office\Office12\GrooveMonitor.exe"
O4 - HKLM\..\Run: [NeroFilterCheck] C:\WINDOWS\system32\NeroCheck.exe
O4 - HKLM\..\Run: [PCTVRemote] C:\Programmi\Pinnacle\PCTV Stereo\Remote\Remoterm.exe
O4 - HKLM\..\Run: [avast!] C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
O4 - HKLM\..\Run: [CloneDVDElbyDelay] "C:\Programmi\Elaborate Bytes\CloneDVD\ElbyCheck.exe" /L ElbyDelay
O4 - HKLM\..\Run: [00PCTFW] "C:\Programmi\PC Tools Firewall Plus\FirewallGUI.exe" -s
O4 - HKLM\..\Run: [Ad-Watch] C:\Programmi\Lavasoft\Ad-Aware\AAWTray.exe
O4 - HKLM\..\Run: [Adobe Photo Downloader] "C:\Programmi\Adobe\Photoshop Album Starter Edition\3.2\Apps\apdproxy.exe"
O4 - HKLM\..\Run: [Adobe Reader Speed Launcher] "C:\Programmi\Adobe\Reader 9.0\Reader\Reader_sl.exe"
O4 - HKLM\..\Run: [SpywareTerminator] "C:\Programmi\Spyware Terminator\SpywareTerminatorShield.exe"
O4 - HKLM\..\Run: [SunJavaUpdateSched] "C:\Programmi\Java\jre6\bin\jusched.exe"
O4 - HKLM\..\Run: [wrna3ls] C:\Programmi\rnamfler\naomf.exe
O4 - HKLM\..\Run: [BluetoothAuthenticationAgent] rundll32.exe bthprops.cpl,,BluetoothAuthenticationAgent
O4 - HKLM\..\Run: [ISUSPM Startup] C:\PROGRA~1\FILECO~1\INSTAL~1\UpdateService\ISUSPM.exe -startup
O4 - HKLM\..\Run: [ISUSScheduler] "C:\Programmi\File comuni\InstallShield\UpdateService\issch.exe" -start
O4 - HKCU\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [CM] "C:\PROGRA~1\VCM\cm.exe" 212.150.243.4
O4 - HKCU\..\Run: [DownloadAccelerator] "C:\Programmi\DAP\DAP.EXE" /STARTUP
O4 - HKCU\..\Run: [RemoteCenter] C:\Programmi\Creative\MediaSource\RemoteControl\RCMan.EXE
O4 - HKCU\..\Run: [DriverMax] "C:\Programmi\Innovative Solutions\DriverMax\devices.exe" -agent
O4 - HKCU\..\Run: [filehippo.com] "C:\Programmi\filehippo.com\UpdateChecker.exe" /background
O4 - HKCU\..\Run: [Advanced SystemCare 3] "C:\Programmi\IObit\Advanced SystemCare 3\AWC.exe" /startup
O4 - HKCU\..\RunOnce: [Shockwave Updater] C:\WINDOWS\system32\Adobe\SHOCKW~1\SWHELP~2.EXE -Update -1100465 -"Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; GTB5; Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1) ; MS Internet Explorer; InfoPath.2; .NET CLR 2.0.50727)" -"http://www.microgiochi.com/giochi/max-altitude-snowboarding-7330.php"
O4 - HKUS\S-1-5-19\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\CTFMON.EXE (User 'SERVIZIO LOCALE')
O4 - HKUS\S-1-5-19\..\RunOnce: [nltide_3] rundll32 advpack.dll,LaunchINFSectionEx nLite.inf,C,,4,N (User 'SERVIZIO LOCALE')
O4 - HKUS\S-1-5-20\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\CTFMON.EXE (User 'SERVIZIO DI RETE')
O4 - HKUS\S-1-5-20\..\RunOnce: [nltide_3] rundll32 advpack.dll,LaunchINFSectionEx nLite.inf,C,,4,N (User 'SERVIZIO DI RETE')
O4 - HKUS\S-1-5-18\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\CTFMON.EXE (User 'SYSTEM')
O4 - HKUS\S-1-5-18\..\RunOnce: [nltide_3] rundll32 advpack.dll,LaunchINFSectionEx nLite.inf,C,,4,N (User 'SYSTEM')
O4 - HKUS\.DEFAULT\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\CTFMON.EXE (User 'Default user')
O4 - HKUS\.DEFAULT\..\RunOnce: [nltide_3] rundll32 advpack.dll,LaunchINFSectionEx nLite.inf,C,,4,N (User 'Default user')
O4 - Startup: Ritaglio schermata e avvio di OneNote 2007.lnk
O4 - Startup: VCM.lnk = C:\Programmi\VCM\cm.exe
O4 - Global Startup: Pinnacle Scheduler.lnk = ?
O4 - Global Startup: PrintAndFax.lnk = C:\Programmi\Fastweb\PrintAndFax\FaxMonitor.exe
O8 - Extra context menu item: &Clean Traces - C:\Programmi\DAP\Privacy Package\dapcleanerie.htm
O8 - Extra context menu item: &Download with &DAP - C:\Programmi\DAP\dapextie.htm
O8 - Extra context menu item: Add to Local Website Archive - C:\Documents and Settings\agostino\Dati applicazioni\aignes\Local Website Archive\config\iearc.htm
O8 - Extra context menu item: Download &all with DAP - C:\Programmi\DAP\dapextie2.htm
O8 - Extra context menu item: E&sporta in Microsoft Excel - res://C:\PROGRA~1\MICROS~1\Office12\EXCEL.EXE/3000
O9 - Extra button: Invia a OneNote - {2670000A-7350-4f3c-8081-5663EE0C6C49} - C:\PROGRA~1\MICROS~1\Office12\ONBttnIE.dll
O9 - Extra 'Tools' menuitem: I&nvia a OneNote - {2670000A-7350-4f3c-8081-5663EE0C6C49} - C:\PROGRA~1\MICROS~1\Office12\ONBttnIE.dll
O9 - Extra button: Skype - {77BF5300-1474-4EC7-9980-D32B190E9B07} - C:\Programmi\Skype\Toolbars\Internet Explorer\SkypeIEPlugin.dll
O9 - Extra button: (no name) - {85d1f590-48f4-11d9-9669-0800200c9a66} - C:\WINDOWS\bdoscandel.exe
O9 - Extra 'Tools' menuitem: Uninstall BitDefender Online Scanner v8 - {85d1f590-48f4-11d9-9669-0800200c9a66} - C:\WINDOWS\bdoscandel.exe
O9 - Extra button: Research - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~1\Office12\REFIEBAR.DLL
O9 - Extra button: Related - {c95fe080-8f5d-11d2-a20b-00aa003c157a} - hex(2):25,53,79,73,74,65,6d,52,6f,6f,74,25,5c,77,65,62,5c,72,65,6c-,61,74,65,64,2e,68,74,6d,00 (file missing)
O9 - Extra 'Tools' menuitem: Show &Related Links - {c95fe080-8f5d-11d2-a20b-00aa003c157a} - hex(2):25,53,79,73,74,65,6d,52,6f,6f,74,25,5c,77,65,62,5c,72,65,6c-,61,74,65,64,2e,68,74,6d,00 (file missing)
O9 - Extra button: (no name) - {e2e2dd38-d088-4134-82b7-f2ba38496583} - C:\WINDOWS\Network Diagnostic\xpnetdiag.exe
O9 - Extra 'Tools' menuitem: @xpsp3res.dll,-20001 - {e2e2dd38-d088-4134-82b7-f2ba38496583} - C:\WINDOWS\Network Diagnostic\xpnetdiag.exe
O9 - Extra button: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\WINDOWS\system32\shdocvw.dll
O9 - Extra 'Tools' menuitem: Windows Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\WINDOWS\system32\shdocvw.dll
O9 - Extra button: (no name) - {1FFF3455-713D-4141-A2A5-896D4691AC5C} - C:\Programmi\Local Website Archive\wsarc_add.exe (HKCU)
O9 - Extra 'Tools' menuitem: Add to Local Website Archive - {1FFF3455-713D-4141-A2A5-896D4691AC5C} - C:\Programmi\Local Website Archive\wsarc_add.exe (HKCU)
O9 - Extra button: Start Local Website Archive - {40A024CA-8EF2-4475-B0AB-20FB7092A14A} - C:\Programmi\Local Website Archive\wsarc.exe (HKCU)
O9 - Extra button: Add to Local Website Archive - {A9BAE3D6-0728-466E-9576-995870AA9061} - C:\Programmi\Local Website Archive\wsarc_add.exe (HKCU)
O10 - Broken Internet access because of LSP provider 'c:\programmi\bonjour\mdnsnsp.dll' missing
O16 - DPF: {2BC66F54-93A8-11D3-BEB6-00105AA9B6AE} (Symantec AntiVirus scanner) - http://security.symantec.com/sscv6/SharedContent/vc/bin/AvSniff.cab
O16 - DPF: {644E432F-49D3-41A1-8DD5-E099162EEEC5} (Symantec RuFSI Utility Class) - http://security.symantec.com/sscv6/SharedContent/common/bin/cabsa.cab
O16 - DPF: {8FEFF364-6A5F-4966-A917-A3AC28411659} - http://www.mariatv.it/SOPCORE.CAB
O16 - DPF: {D27CDB6E-AE6D-11CF-96B8-444553540000} (Shockwave Flash Object) - http://fpdownload2.macromedia.com/get/shockwave/cabs/flash/swflash.cab
O16 - DPF: {D821DC4A-0814-435E-9820-661C543A4679} (CRLDownloadWrapper Class) - http://drmlicense.one.microsoft.com/crlupdate/en/crlocx.ocx
O18 - Protocol: grooveLocalGWS - {88FED34C-F0CA-4636-A375-3CB6248B04CD} - C:\Programmi\Microsoft Office\Office12\GrooveSystemServices.dll
O18 - Protocol: skype4com - {FFC8B962-9B40-4DFF-9458-1830C7DD7F5D} - C:\PROGRA~1\FILECO~1\Skype\Skype4COM.dll
O18 - Protocol: wot - {C2A44D6B-CB9F-4663-88A6-DF2F26E4D952} - C:\Programmi\WOT\WOT.dll
O23 - Service: a-squared Free Service (a2free) - Emsi Software GmbH - C:\Programmi\a-squared Free\a2service.exe
O23 - Service: avast! iAVS4 Control Service (aswUpdSv) - ALWIL Software - C:\Programmi\Alwil Software\Avast4\aswUpdSv.exe
O23 - Service: Ati HotKey Poller - Unknown owner - C:\WINDOWS\system32\Ati2evxx.exe
O23 - Service: ATI Smart - Unknown owner - C:\WINDOWS\system32\ati2sgag.exe
O23 - Service: avast! Antivirus - ALWIL Software - C:\Programmi\Alwil Software\Avast4\ashServ.exe
O23 - Service: avast! Mail Scanner - ALWIL Software - C:\Programmi\Alwil Software\Avast4\ashMaiSv.exe
O23 - Service: avast! Web Scanner - ALWIL Software - C:\Programmi\Alwil Software\Avast4\ashWebSv.exe
O23 - Service: Creative Service for CDROM Access - Creative Technology Ltd - C:\WINDOWS\system32\CTsvcCDA.exe
O23 - Service: Java Quick Starter (JavaQuickStarterService) - Sun Microsystems, Inc. - C:\Programmi\Java\jre6\bin\jqs.exe
O23 - Service: Lavasoft Ad-Aware Service - Lavasoft - C:\Programmi\Lavasoft\Ad-Aware\AAWService.exe
O23 - Service: NMSAccessU - Unknown owner - C:\Programmi\CDBurnerXP\NMSAccessU.exe
O23 - Service: PC Tools Firewall Plus (PCToolsFirewallPlus) - PC Tools - C:\Programmi\PC Tools Firewall Plus\FWService.exe
O23 - Service: RdnaoFlSvc - Unknown owner - C:\Programmi\rnamfler\naofsvc.exe
O23 - Service: Spyware Terminator Realtime Shield Service (sp_rssrv) - Crawler.com - C:\Programmi\Spyware Terminator\sp_rsser.exe

--
End of file - 13920 bytes

Vi prego di indicarmi dettagliatamente i passi da eseguire dato che sono inesperto o quasi. Ringrazio tutti per la cortese collaborazione.

Salve.
Disattiva il ripristino configurazione di sistema, e tienilo disattivato, fino alla soluzione del problema http://guide.aiutamici.com/guide?C1=7&C2=68&ID=80121
Se non sai "fixare"le voci,segui questa guida dettagliata: http://www.aiutaamici.com/software?ID=11175
Avvia hijackthis, metti la spunta alle voci che andrò ad elencarti e con tutte le applicazioni chiuse e disconnesso da Internet,premi su fix checked
O4 - HKCU\..\RunOnce: [Shockwave Updater] C:\WINDOWS\system32\Adobe\SHOCKW~1\SWHELP~2.EXE -Update -1100465 -"Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; GTB5; Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1) ; MS Internet Explorer; InfoPath.2; .NET CLR 2.0.50727)" -"http://www.microgiochi.com/giochi/max-altitude-snowboarding-7330.php"
O9 - Extra button: Related - {c95fe080-8f5d-11d2-a20b-00aa003c157a} - hex(2):25,53,79,73,74,65,6d,52,6f,6f,74,25,5c,77,65,62,5c,72,65,6c-,61,74,65,64, 2e,68,74,6d,00 (file missing)
O9 - Extra 'Tools' menuitem: Show &Related Links - {c95fe080-8f5d-11d2-a20b-00aa003c157a} - hex(2):25,53,79,73,74,65,6d,52,6f,6f,74,25,5c,77,65,62,5c,72,65,6c-,61,74,65,64, 2e,68,74,6d,00 (file missing)
O16 - DPF: {2BC66F54-93A8-11D3-BEB6-00105AA9B6AE} (Symantec AntiVirus scanner) - http://security.symantec.com/sscv6/SharedContent/vc/bin/AvSniff.cab
O16 - DPF: {644E432F-49D3-41A1-8DD5-E099162EEEC5} (Symantec RuFSI Utility Class) - http://security.symantec.com/sscv6/SharedContent/common/bin/cabsa.cab
O16 - DPF: {8FEFF364-6A5F-4966-A917-A3AC28411659} - http://www.mariatv.it/SOPCORE.CAB
O16 - DPF: {D27CDB6E-AE6D-11CF-96B8-444553540000} (Shockwave Flash Object) - http://fpdownload2.macromedia.com/get/shockwave/cabs/flash/swflash.cab
O16 - DPF: {D821DC4A-0814-435E-9820-661C543A4679} (CRLDownloadWrapper Class) - http://drmlicense.one.microsoft.com/crlupdate/en/crlocx.ocx

Dai una pulita (registro compreso)con CCleaner http://www.aiutaamici.com/software?ID=11223
Riavvia il pc.

Poi:
Start\Esegui\copia e incolla la stringa %temp% clicca su Ok, svuota la cartella temp. (non eliminare la cartella)
Poi:
Provvedi a svuotare del suo contenuto la cartella Prefetch :
clicca su Risorse del Computer
clicca su Disco locale C:
cerca, all’interno delle cartelle che saranno visualizzate la cartella Windows, aprila ed, al suo interno, cerca la cartella Prefetch, la apri ed elimina tutte le voci conservate al suo interno ( non eliminare la cartella)
SVUOTA IL CESTINO
Poi:
Lancia Hijackthis e pulisci gli ADS in questo modo:
clicca sulla voce Open the misc tool section
clicca su Open ads spy
togli la spunta alla voce Quick scan (windows base folder only)
clicca su Scan
se venissero rilevati ADS, spunta tutte le caselline e clicca su Remove selected

Scarica ed installa MalwareBytes:
clicca qui per il download : http://www.aiutamici.com/software?id=80346
Prima di fare la scansione AGGIORNALO. (è molto importante)
Esegui una scansione completa del sistema.
Posta il log.

Esegui questa ulteriore scansione:

Importante: Disabilita il tuo antivirus e chiudi TUTTI i programmi aperti,e dopo aver scaricato COMBOFIX, chiudi la connessione.

Scarica Combofix
http://download.bleepingcomputer.com/sUBs/ComboFix.exe
Salvalo sul desktop.
Doppio click su combofix.exe (comparirà una videata.)
Se ti verrà chiesto se vuoi Installare LA CONSOLE DI RIPRISTINO DI EMERGENZA, clicca NO.
E' probabile che ti siano inviati messaggi dall'antivirus, tu ignorali.
Durante l'operazione di scansione è importante non usare il PC (neanche il mouse) e attendere pazientemente la fine delle operazioni.
Al termine, verrà creato un file log sul Desktop, chiamato C:\ComboFix.txt. Postalo qui.
Se qualche passaggio non le è chiaro, sono qui per chiarirlo meglio.
Vediamo se ci sono miglioramenti.