Tra i vari log non vedo quello di HiJackthis. Puoi rifarlo per vedere se ci sono voci anomale ??

Inoltre, che sistema operativo hai ?

Se puoi accedere a Start --> Esegui --> scrivi: msconfig. Clicca su Avvio. Nella finestra che si apre togli la spunta a tutte le voci tranne Antivirus a Firewall.

Riavvia il PC e fai sapere come si comporta.

Il log non me lo scarica. Se puoi prova a incollarlo qui direttamente come un file di testo.

Allora il Log di lo incollo qui:

Logfile of Trend Micro HijackThis v2.0.4
Scan saved at 18:16:21, on 28/08/2016
Platform: Unknown Windows (WinNT 6.02.1008)
MSIE: Internet Explorer v11.0 (11.00.9600.18123)
Boot mode: Normal

Running processes:
C:\Program Files (x86)\Samsung\Kies\Kies.exe
C:\Program Files (x86)\Samsung\Kies\External\FirmwareUpdate\KiesPDLR.exe
C:\ProgramData\MEGAsync\MEGAsync.exe
C:\Program Files (x86)\Samsung\Kies\KiesTrayAgent.exe
C:\Program Files (x86)\Mozilla Firefox\firefox.exe
C:\Program Files (x86)\Mozilla Firefox\plugin-container.exe
C:\Windows\SysWOW64\Macromed\Flash\FlashPlayerPlugin_22_0_0_209.exe
C:\Windows\SysWOW64\Macromed\Flash\FlashPlayerPlugin_22_0_0_209.exe
C:\Users\Nuccio1\Downloads\HiJackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = Preserve
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.tiscali.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://www.bing.com/search?FORM=INCOH1&PC=IC05&PTAG=ICO-a316ed01
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 = C:\Windows\SysWOW64\blank.htm
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName =
F2 - REG:system.ini: UserInit=userinit.exe,
O2 - BHO: Skype for Business Click to Call BHO - {31D09BA0-12F5-4CCE-BE8A-2923E76605DA} - C:\Program Files (x86)\Microsoft Office\Office15\OCHelper.dll
O2 - BHO: ExplorerBHO Class - {449D0D6E-2412-4E61-B68F-1CB625CD9E52} - C:\Program Files\Classic Shell\ClassicExplorer32.dll (file missing)
O2 - BHO: Java(tm) Plug-In SSV Helper - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Program Files (x86)\Java\jre1.8.0_91\bin\ssv.dll
O2 - BHO: Microsoft SkyDrive Pro Browser Helper - {D0498E0A-45B7-42AE-A9AA-ABA463DBD3BF} - C:\PROGRA~2\MICROS~1\Office15\GROOVEEX.DLL
O2 - BHO: Java(tm) Plug-In 2 SSV Helper - {DBC80044-A445-435b-BC74-9C25C1C588A9} - C:\Program Files (x86)\Java\jre1.8.0_91\bin\jp2ssv.dll
O2 - BHO: ClassicIEBHO Class - {EA801577-E6AD-4BD5-8F71-4BE0154331A4} - C:\Program Files\Classic Shell\ClassicIEDLL_32.dll
O3 - Toolbar: Classic Explorer Bar - {553891B7-A0D5-4526-BE18-D3CE461D6310} - C:\Program Files\Classic Shell\ClassicExplorer32.dll (file missing)
O4 - HKLM\..\Run: [NielsenOnline] C:\Program Files (x86)\NetRatingsNetSight\NetSight\NielsenOnline.exe
O4 - HKLM\..\Run: [SunJavaUpdateSched] "C:\Program Files (x86)\Common Files\Java\Java Update\jusched.exe"
O4 - HKLM\..\Run: [KiesTrayAgent] C:\Program Files (x86)\Samsung\Kies\KiesTrayAgent.exe
O4 - HKCU\..\Run: [Skype] "C:\Program Files (x86)\Skype\Phone\Skype.exe" /minimized /regrun
O4 - HKCU\..\Run: [CCleaner Monitoring] "C:\Program Files\CCleaner\CCleaner64.exe" /MONITOR
O4 - HKCU\..\Run: [KiesPreload] C:\Program Files (x86)\Samsung\Kies\Kies.exe /preload
O4 - HKCU\..\Run: [KiesAirMessage] C:\Program Files (x86)\Samsung\Kies\KiesAirMessage.exe -startup
O4 - HKCU\..\Run: [] C:\Program Files (x86)\Samsung\Kies\External\FirmwareUpdate\KiesPDLR.exe
O4 - HKCU\..\Run: [BlueStacks Agent] C:\Program Files (x86)\Bluestacks\HD-Agent.exe
O4 - Startup: MEGAsync.lnk = C:\ProgramData\MEGAsync\MEGAsync.exe
O9 - Extra button: Invia a OneNote - {2670000A-7350-4f3c-8081-5663EE0C6C49} - C:\Program Files (x86)\Microsoft Office\Office15\ONBttnIE.dll
O9 - Extra 'Tools' menuitem: I&nvia a OneNote - {2670000A-7350-4f3c-8081-5663EE0C6C49} - C:\Program Files (x86)\Microsoft Office\Office15\ONBttnIE.dll
O9 - Extra button: Lync - Chiamata con un clic - {31D09BA0-12F5-4CCE-BE8A-2923E76605DA} - C:\Program Files (x86)\Microsoft Office\Office15\OCHelper.dll
O9 - Extra 'Tools' menuitem: Lync - Chiamata con un clic - {31D09BA0-12F5-4CCE-BE8A-2923E76605DA} - C:\Program Files (x86)\Microsoft Office\Office15\OCHelper.dll
O9 - Extra button: (no name) - {56753E59-AF1D-4FBA-9E15-31557124ADA2} - C:\Program Files\Classic Shell\ClassicIE_32.exe
O9 - Extra 'Tools' menuitem: Classic IE Settings - {56753E59-AF1D-4FBA-9E15-31557124ADA2} - C:\Program Files\Classic Shell\ClassicIE_32.exe
O9 - Extra button: &Note collegate di OneNote - {789FE86F-6FC4-46A1-9849-EDE0DB0C95CA} - C:\Program Files (x86)\Microsoft Office\Office15\ONBttnIELinkedNotes.dll
O9 - Extra 'Tools' menuitem: &Note collegate di OneNote - {789FE86F-6FC4-46A1-9849-EDE0DB0C95CA} - C:\Program Files (x86)\Microsoft Office\Office15\ONBttnIELinkedNotes.dll
O11 - Options group: [ACCELERATED_GRAPHICS] Accelerated graphics
O18 - Protocol: osf - {D924BDC6-C83A-4BD5-90D0-095128A113D1} - C:\Program Files (x86)\Microsoft Office\Office15\MSOSB.DLL
O18 - Filter hijack: text/xml - {807583E5-5146-11D5-A672-00B0D022E945} - C:\Program Files (x86)\Common Files\Microsoft Shared\OFFICE15\MSOXMLMF.DLL
O23 - Service: Adobe Acrobat Update Service (AdobeARMservice) - Adobe Systems Incorporated - C:\Program Files (x86)\Common Files\Adobe\ARM\1.0\armsvc.exe
O23 - Service: @%SystemRoot%\system32\Alg.exe,-112 (ALG) - Unknown owner - C:\Windows\System32\alg.exe (file missing)
O23 - Service: @%SystemRoot%\system32\efssvc.dll,-100 (EFS) - Unknown owner - C:\Windows\System32\lsass.exe (file missing)
O23 - Service: ESET Service (ekrn) - ESET - C:\Program Files\ESET\ESET NOD32 Antivirus\x86\ekrn.exe
O23 - Service: @%systemroot%\system32\fxsresm.dll,-118 (Fax) - Unknown owner - C:\Windows\system32\fxssvc.exe (file missing)
O23 - Service: @%SystemRoot%\system32\ieetwcollectorres.dll,-1000 (IEEtwCollectorService) - Unknown owner - C:\Windows\system32\IEEtwCollector.exe (file missing)
O23 - Service: @keyiso.dll,-100 (KeyIso) - Unknown owner - C:\Windows\system32\lsass.exe (file missing)
O23 - Service: Mozilla Maintenance Service (MozillaMaintenance) - Mozilla Foundation - C:\Program Files (x86)\Mozilla Maintenance Service\maintenanceservice.exe
O23 - Service: @comres.dll,-2797 (MSDTC) - Unknown owner - C:\Windows\System32\msdtc.exe (file missing)
O23 - Service: @%SystemRoot%\System32\netlogon.dll,-102 (Netlogon) - Unknown owner - C:\Windows\system32\lsass.exe (file missing)
O23 - Service: @%systemroot%\system32\Locator.exe,-2 (RpcLocator) - Unknown owner - C:\Windows\system32\locator.exe (file missing)
O23 - Service: @%SystemRoot%\system32\samsrv.dll,-1 (SamSs) - Unknown owner - C:\Windows\system32\lsass.exe (file missing)
O23 - Service: @%SystemRoot%\system32\snmptrap.exe,-3 (SNMPTRAP) - Unknown owner - C:\Windows\System32\snmptrap.exe (file missing)
O23 - Service: @%systemroot%\system32\spoolsv.exe,-1 (Spooler) - Unknown owner - C:\Windows\System32\spoolsv.exe (file missing)
O23 - Service: @%SystemRoot%\system32\sppsvc.exe,-101 (sppsvc) - Unknown owner - C:\Windows\system32\sppsvc.exe (file missing)
O23 - Service: SAMSUNG Mobile Connectivity Service (ss_conn_service) - DEVGURU Co., LTD. - C:\Program Files (x86)\Samsung\USB Drivers\27_ssconn\conn\ss_conn_service.exe
O23 - Service: @%SystemRoot%\system32\ui0detect.exe,-101 (UI0Detect) - Unknown owner - C:\Windows\system32\UI0Detect.exe (file missing)
O23 - Service: @%SystemRoot%\system32\vaultsvc.dll,-1003 (VaultSvc) - Unknown owner - C:\Windows\system32\lsass.exe (file missing)
O23 - Service: @%SystemRoot%\system32\vds.exe,-100 (vds) - Unknown owner - C:\Windows\System32\vds.exe (file missing)
O23 - Service: VMware Authorization Service (VMAuthdService) - VMware, Inc. - C:\Program Files (x86)\VMware\VMware Player\vmware-authd.exe
O23 - Service: VMware DHCP Service (VMnetDHCP) - VMware, Inc. - C:\Windows\SysWOW64\vmnetdhcp.exe
O23 - Service: VMware USB Arbitration Service (VMUSBArbService) - VMware, Inc. - C:\Program Files (x86)\Common Files\VMware\USB\vmware-usbarbitrator64.exe
O23 - Service: VMware NAT Service - VMware, Inc. - C:\Windows\SysWOW64\vmnat.exe
O23 - Service: @%systemroot%\system32\vssvc.exe,-102 (VSS) - Unknown owner - C:\Windows\system32\vssvc.exe (file missing)
O23 - Service: @%systemroot%\system32\wbengine.exe,-104 (wbengine) - Unknown owner - C:\Windows\system32\wbengine.exe (file missing)
O23 - Service: @%ProgramFiles%\Windows Defender\MpAsDesc.dll,-320 (WdNisSvc) - Unknown owner - C:\Program Files (x86)\Windows Defender\NisSrv.exe (file missing)
O23 - Service: @%ProgramFiles%\Windows Defender\MpAsDesc.dll,-310 (WinDefend) - Unknown owner - C:\Program Files (x86)\Windows Defender\MsMpEng.exe (file missing)
O23 - Service: @%Systemroot%\system32\wbem\wmiapsrv.exe,-110 (wmiApSrv) - Unknown owner - C:\Windows\system32\wbem\WmiApSrv.exe (file missing)
O23 - Service: @%PROGRAMFILES%\Windows Media Player\wmpnetwk.exe,-101 (WMPNetworkSvc) - Unknown owner - C:\Program Files (x86)\Windows Media Player\wmpnetwk.exe (file missing)

--
End of file - 9191 bytes

Per favore mi spieghi come faccio a fixare le voci?
E le toolbar dove si trovano?

Allora le voci in HiJackthis le ho cancellate.
Adesso su Toolbar Cleaner quali sono le estensioni che devo cancellare?
Qui c'è l'immagine di Toolbar Cleaner del mio PC
https://s16.postimg.org/jtbol0q4l/Toolbar_Cleaner.jpg

Fatto!!
Speriamo bene.
Grazie Dottor Serpente e Buona Serata.