buona serata x favore mi potete controllare questo Log se tutto va bene ,o c'è da eliminare un po di 04 / 23/R0 Grazie

Logfile of Trend Micro HijackThis v2.0.4
Scan saved at 21:04:34, on 04/05/2016
Platform: Windows 7 SP1 (WinNT 6.00.3505)
MSIE: Internet Explorer v11.0 (11.00.9600.18283)
Boot mode: Normal

Running processes:
C:\Windows\system32\Dwm.exe
C:\Windows\Explorer.EXE
C:\Program Files\Avira\Antivirus\avgnt.exe
C:\Program Files\Common Files\Common Desktop Agent\CDASrv.exe
C:\Program Files\Logitech\SetPointP\SetPoint.exe
C:\Program Files\Common Files\Freemake Shared\ProductUpdater\ProductUpdater.exe
C:\Program Files\NVIDIA Corporation\Update Core\NvBackend.exe
C:\Windows\System32\spool\drivers\w32x86\3\NetFaxTray.exe
C:\Program Files\Avira\Launcher\Avira.Systray.exe
C:\Windows\system32\taskhost.exe
C:\Windows\system32\DllHost.exe
C:\Program Files\Common Files\LogiShrd\KHAL3\KHALMNPR.EXE
C:\Windows\system32\GWX\GWX.exe
C:\Program Files\Google\Chrome\Application\chrome.exe
C:\Program Files\Google\Chrome\Application\chrome.exe
C:\Program Files\Google\Chrome\Application\chrome.exe
C:\Program Files\Google\Chrome\Application\chrome.exe
C:\Program Files\Google\Chrome\Application\chrome.exe
C:\Program Files\Google\Chrome\Application\chrome.exe
C:\Program Files\Trend Micro\HiJackThis\HiJackThis.exe
C:\Windows\system32\DllHost.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = http://go.microsoft.com/fwlink/?LinkId=54896
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.libero.it/
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://go.microsoft.com/fwlink/p/?LinkId=255141
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/p/?LinkId=255141
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant =
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,CustomizeSearch =
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Local Page =
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName =
O2 - BHO: Logitech SetPoint - {AF949550-9094-4807-95EC-D1C317803333} - C:\Program Files\Logitech\SetPointP\SetPointSmooth.dll
O4 - HKLM\..\Run: [avgnt] "C:\Program Files\Avira\Antivirus\avgnt.exe" /min
O4 - HKLM\..\Run: [Avira SystrayStartTrigger] C:\Program Files\Avira\Launcher\Avira.SystrayStartTrigger.exe
O4 - HKLM\..\Run: [CDAServer] C:\Program Files\Common Files\Common Desktop Agent\CDASrv.exe
O4 - HKLM\..\Run: [EvtMgr6] C:\Program Files\Logitech\SetPointP\SetPoint.exe /launchGaming
O4 - HKLM\..\Run: [ProductUpdater] C:\Program Files\Common Files\Freemake Shared\ProductUpdater\ProductUpdater.exe
O4 - HKLM\..\Run: [NvBackend] "C:\Program Files\NVIDIA Corporation\Update Core\NvBackend.exe"
O4 - HKLM\..\Run: [Logitech Download Assistant] C:\Windows\system32\rundll32.exe C:\Windows\System32\LogiLDA.dll,LogiFetch
O4 - HKCU\..\Run: [EEDSpeedLauncher] rundll32.exe C:\Windows\system32\eed_ec.dll,SpeedLauncher
O4 - HKUS\S-1-5-18\..\Run: [EEDSpeedLauncher] rundll32.exe C:\Windows\system32\eed_ec.dll,SpeedLauncher (User 'SYSTEM')
O4 - HKUS\.DEFAULT\..\Run: [EEDSpeedLauncher] rundll32.exe C:\Windows\system32\eed_ec.dll,SpeedLauncher (User 'Default user')
O4 - Global Startup: Samsung Network PC Fax.lnk = C:\Windows\System32\spool\drivers\w32x86\3\NetFaxTray.exe
O11 - Options group: [ACCELERATED_GRAPHICS] Accelerated graphics
O17 - HKLM\System\CCS\Services\Tcpip\..\{9180408A-5F4F-49C8-893A-F96B95D37F84}: NameServer = 8.8.8.8,8.8.4.4
O23 - Service: Adobe Acrobat Update Service (AdobeARMservice) - Adobe Systems Incorporated - C:\Program Files\Common Files\Adobe\ARM\1.0\armsvc.exe
O23 - Service: Avira Protezione email (AntiVirMailService) - Avira Operations GmbH & Co. KG - C:\Program Files\Avira\Antivirus\avmailc7.exe
O23 - Service: Avira Pianificatore (AntiVirSchedulerService) - Avira Operations GmbH & Co. KG - C:\Program Files\Avira\Antivirus\sched.exe
O23 - Service: Avira Protezione in tempo reale (AntiVirService) - Avira Operations GmbH & Co. KG - C:\Program Files\Avira\Antivirus\avguard.exe
O23 - Service: Avira Protezione web (AntiVirWebService) - Avira Operations GmbH & Co. KG - C:\Program Files\Avira\Antivirus\avwebg7.exe
O23 - Service: Avira Service Host (Avira.ServiceHost) - Avira Operations GmbH & Co. KG - C:\Program Files\Avira\Launcher\Avira.ServiceHost.exe
O23 - Service: Servizio Google Update (gupdate) (gupdate) - Google Inc. - C:\Program Files\Google\Update\GoogleUpdate.exe
O23 - Service: Servizio Google Update (gupdatem) (gupdatem) - Google Inc. - C:\Program Files\Google\Update\GoogleUpdate.exe
O23 - Service: Logitech Bluetooth Service (LBTServ) - Logitech, Inc. - C:\Program Files\Common Files\LogiShrd\Bluetooth\lbtserv.exe
O23 - Service: MBAMScheduler - Malwarebytes - C:\Program Files\Malwarebytes Anti-Malware\mbamscheduler.exe
O23 - Service: MBAMService - Malwarebytes - C:\Program Files\Malwarebytes Anti-Malware\mbamservice.exe
O23 - Service: Mozilla Maintenance Service (MozillaMaintenance) - Mozilla Foundation - C:\Program Files\Mozilla Maintenance Service\maintenanceservice.exe
O23 - Service: NVIDIA Display Driver Service (nvsvc) - NVIDIA Corporation - C:\Windows\system32\nvvsvc.exe
O23 - Service: Samsung Network Fax Server - Samsung Electronics Co., Ltd. - C:\Windows\system32\spool\drivers\w32x86\3\NetFaxServer.exe
O23 - Service: Samsung Printer Dianostics Service - Unknown owner - C:\Windows\system32\\spdsvc.exe
O23 - Service: Samsung Cloud Print Service (SamsungCloudPrintSvc) - Unknown owner - C:\Program Files\Samsung\Samsung Cloud Print PC Agent\SCP_Svc.exe
O23 - Service: Skype Updater (SkypeUpdate) - Skype Technologies - C:\Program Files\Skype\Updater\Updater.exe
O23 - Service: NVIDIA Stereoscopic 3D Driver Service (Stereo Service) - NVIDIA Corporation - C:\Program Files\NVIDIA Corporation\3D Vision\nvSCPAPISvr.exe
O23 - Service: UMVPFSrv - Logitech Inc. - C:\Program Files\Common Files\logishrd\LVMVFM\UMVPFSrv.exe

--
End of file - 6178 bytes

ciao peppe, il log è giusto così, non presenta problemi se vuoi eliminare delle voci inutili sono queste:

Chiudi tutti i programmi e disconnesso da internet,
Lancia HijackThis e clicca sul secondo pulsante Do a system scan only
inserisci il segno di spunta nel quadratino davanti alle righe sotto elencate, una volta seleziona clicca il tasto Fix checked per procedere all'eliminazione, comparirà una finestra clicca su SI per accettare e l'operazione è conclusa.
Ricorda che Hijackthis deve essere avviato da una cartella a lui dedicata sul desktop. Solo così Hijackthis creerà copie di backup di quello che viene eliminato prima di apportare modifiche, così in caso di inconvenienti si possono reinstallare.

O4 - HKLM\..\Run: [CDAServer] C:\Program Files\Common Files\Common Desktop Agent\CDASrv.exe
O4 - HKLM\..\Run: [EvtMgr6] C:\Program Files\Logitech\SetPointP\SetPoint.exe /launchGaming
O4 - HKLM\..\Run: [ProductUpdater] C:\Program Files\Common Files\Freemake Shared\ProductUpdater\ProductUpdater.exe
O4 - HKLM\..\Run: [NvBackend] "C:\Program Files\NVIDIA Corporation\Update Core\NvBackend.exe"
O4 - HKLM\..\Run: [Logitech Download Assistant] C:\Windows\system32\rundll32.exe C:\Windows\System32\LogiLDA.dll,LogiFetch
O4 - HKCU\..\Run: [EEDSpeedLauncher] rundll32.exe C:\Windows\system32\eed_ec.dll,SpeedLauncher
O4 - HKUS\S-1-5-18\..\Run: [EEDSpeedLauncher] rundll32.exe C:\Windows\system32\eed_ec.dll,SpeedLauncher (User 'SYSTEM')
O4 - HKUS\.DEFAULT\..\Run: [EEDSpeedLauncher] rundll32.exe C:\Windows\system32\eed_ec.dll,SpeedLauncher (User 'Default user')
O4 - Global Startup: Samsung Network PC Fax.lnk = C:\Windows\System32\spool\drivers\w32x86\3\NetFaxTray.exe

Alla fine pulizia con Ccleaner compreso il Registro e sei a posto.