ciao
come sistema ho xp.
Il computer è diventato molto lento,ho fatto la scansione con malwarebytes con doctor web e spybot.
Hanno trovato alcune pecche che ho eliminato,ma non ho risolto il problema.
Chiedo pertanto se perfavore mi date un occhiata al log che allego.
grazie




Logfile of Trend Micro HijackThis v2.0.4
Scan saved at 15.04.19, on 28/08/2013
Platform: Windows XP SP3 (WinNT 5.01.2600)
MSIE: Internet Explorer v8.00 (8.00.6001.18702)
Boot mode: Normal

Running processes:
F:\WINDOWS\System32\smss.exe
F:\WINDOWS\system32\winlogon.exe
F:\WINDOWS\system32\services.exe
F:\WINDOWS\system32\lsass.exe
F:\WINDOWS\system32\svchost.exe
F:\WINDOWS\System32\svchost.exe
F:\Programmi\WIDCOMM\Bluetooth Software\bin\btwdins.exe
F:\WINDOWS\system32\svchost.exe
F:\WINDOWS\Explorer.EXE
F:\WINDOWS\system32\spoolsv.exe
F:\Programmi\Avira\AntiVir Desktop\sched.exe
F:\Programmi\File comuni\Acronis\Schedule2\schedul2.exe
F:\Programmi\Avira\AntiVir Desktop\avguard.exe
F:\Programmi\AskPartnerNetwork\Toolbar\apnmcp.exe
F:\Programmi\Java\jre7\bin\jqs.exe
F:\Programmi\Microsoft LifeCam\MSCamS32.exe
F:\Programmi\PC Tools Firewall Plus\FWService.exe
F:\Documents and Settings\All Users\Dati applicazioni\Skype\Toolbars\Skype C2C Service\c2c_service.exe
F:\WINDOWS\system32\svchost.exe
F:\Programmi\File comuni\Acronis\Fomatik\TrueImageTryStartService.exe
F:\Programmi\Avira\AntiVir Desktop\avshadow.exe
F:\Programmi\Avira\AntiVir Desktop\AVWEBGRD.EXE
F:\WINDOWS\system32\wscntfy.exe
F:\Programmi\PC Tools Firewall Plus\FirewallGUI.exe
F:\WINDOWS\vVX1000.exe
F:\Programmi\File comuni\Java\Java Update\jusched.exe
F:\Programmi\Avira\AntiVir Desktop\avgnt.exe
F:\Programmi\AskPartnerNetwork\Toolbar\Updater\TBNotifier.exe
F:\Programmi\Skype\Phone\Skype.exe
F:\WINDOWS\system32\ctfmon.exe
F:\Programmi\Howard\Howard.exe
F:\Programmi\internet explorer\iexplore.exe
F:\Programmi\internet explorer\iexplore.exe
F:\Programmi\AskPartnerNetwork\Toolbar\ServiceLocator.exe
F:\Programmi\AskPartnerNetwork\Toolbar\Toolbar.exe
F:\Programmi\Microsoft Office\Office12\WINWORD.EXE
F:\WINDOWS\system32\msiexec.exe
F:\WINDOWS\system32\wuauclt.exe
F:\Programmi\Trend Micro\HiJackThis\HiJackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://isearch.glarysoft.com/?src=iehome
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.google.it/
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://isearch.glarysoft.com/?src=iehome
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://isearch.glarysoft.com/?src=iehome
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Collegamenti
O2 - BHO: Avira SearchFree Toolbar plus Web Protection BHO - {41564952-412D-5637-00A7-7A786E7484D7} - "F:\Programmi\AskPartnerNetwork\Toolbar\AVIRA-V7\Passport.dll" (file missing)
O2 - BHO: Canon Easy Web Print Helper - {68F9551E-0411-48E4-9AAF-4BC42A6A46BE} - F:\Programmi\Canon\Easy-WebPrint\EWPBrowseLoader.dll
O2 - BHO: Groove GFS Browser Helper - {72853161-30C5-4D22-B7F9-0BBC1D38A37E} - F:\Programmi\Microsoft Office\Office12\GrooveShellExtensions.dll
O2 - BHO: Java(tm) Plug-In SSV Helper - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - F:\Programmi\Java\jre7\bin\ssv.dll
O2 - BHO: Guida per l'accesso a Windows Live - {9030D464-4C02-4ABF-8ECC-5164760863C6} - F:\Programmi\File comuni\Microsoft Shared\Windows Live\WindowsLiveLogin.dll
O2 - BHO: SkypeIEPluginBHO - {AE805869-2E5C-4ED4-8F7B-F1F7851A4497} - F:\Programmi\Skype\Toolbars\Internet Explorer\skypeieplugin.dll
O2 - BHO: Java(tm) Plug-In 2 SSV Helper - {DBC80044-A445-435b-BC74-9C25C1C588A9} - F:\Programmi\Java\jre7\bin\jp2ssv.dll
O3 - Toolbar: (no name) - {10EDB994-47F8-43F7-AE96-F2EA63E9F90F} - (no file)
O3 - Toolbar: Avira SearchFree Toolbar plus Web Protection - {41564952-412D-5637-00A7-7A786E7484D7} - "F:\Programmi\AskPartnerNetwork\Toolbar\AVIRA-V7\Passport.dll" (file missing)
O4 - HKLM\..\Run: [00PCTFW] "F:\Programmi\PC Tools Firewall Plus\FirewallGUI.exe" -s
O4 - HKLM\..\Run: [VX1000] F:\WINDOWS\vVX1000.exe
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE F:\WINDOWS\system32\NvCpl.dll,NvStartup
O4 - HKLM\..\Run: [SunJavaUpdateSched] "F:\Programmi\File comuni\Java\Java Update\jusched.exe"
O4 - HKLM\..\Run: [avgnt] "F:\Programmi\Avira\AntiVir Desktop\avgnt.exe" /min
O4 - HKLM\..\Run: [ApnTBMon] "F:\Programmi\AskPartnerNetwork\Toolbar\Updater\TBNotifier.exe"
O4 - HKCU\..\Run: [Skype] "F:\Programmi\Skype\Phone\Skype.exe" /minimized /regrun
O4 - HKCU\..\Run: [ctfmon.exe] F:\WINDOWS\system32\ctfmon.exe
O4 - HKUS\S-1-5-18\..\Run: [CTFMON.EXE] F:\WINDOWS\system32\CTFMON.EXE (User 'SYSTEM')
O4 - HKUS\S-1-5-18\..\RunOnce: [tscuninstall] %systemroot%\system32\tscupgrd.exe (User 'SYSTEM')
O4 - HKUS\.DEFAULT\..\Run: [CTFMON.EXE] F:\WINDOWS\system32\CTFMON.EXE (User 'Default user')
O4 - HKUS\.DEFAULT\..\RunOnce: [tscuninstall] %systemroot%\system32\tscupgrd.exe (User 'Default user')
O4 - Startup: Howard.lnk = F:\Programmi\Howard\Howard.exe
O8 - Extra context menu item: Invia a Bluetooth - F:\Programmi\WIDCOMM\Bluetooth Software\btsendto_ie.htm
O8 - Extra context menu item: Invia a periferica &Bluetooth... - F:\Programmi\WIDCOMM\Bluetooth Software\btsendto_ie_ctx.htm
O9 - Extra button: Invia a OneNote - {2670000A-7350-4f3c-8081-5663EE0C6C49} - F:\PROGRA~1\MICROS~2\Office12\ONBttnIE.dll
O9 - Extra 'Tools' menuitem: I&nvia a OneNote - {2670000A-7350-4f3c-8081-5663EE0C6C49} - F:\PROGRA~1\MICROS~2\Office12\ONBttnIE.dll
O9 - Extra button: Skype Click to Call - {898EA8C8-E7FF-479B-8935-AEC46303B9E5} - F:\Programmi\Skype\Toolbars\Internet Explorer\skypeieplugin.dll
O9 - Extra button: Research - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - F:\PROGRA~1\MICROS~2\Office12\REFIEBAR.DLL
O9 - Extra button: @btrez.dll,-4015 - {CCA281CA-C863-46ef-9331-5C8D4460577F} - F:\Programmi\WIDCOMM\Bluetooth Software\btsendto_ie.htm
O9 - Extra 'Tools' menuitem: @btrez.dll,-12650 - {CCA281CA-C863-46ef-9331-5C8D4460577F} - F:\Programmi\WIDCOMM\Bluetooth Software\btsendto_ie.htm
O9 - Extra button: (no name) - {e2e2dd38-d088-4134-82b7-f2ba38496583} - F:\WINDOWS\Network Diagnostic\xpnetdiag.exe
O9 - Extra 'Tools' menuitem: @xpsp3res.dll,-20001 - {e2e2dd38-d088-4134-82b7-f2ba38496583} - F:\WINDOWS\Network Diagnostic\xpnetdiag.exe
O10 - Unknown file in Winsock LSP: f:\windows\system32\nwprovau.dll
O16 - DPF: {6E32070A-766D-4EE6-879C-DC1FA91D2FC3} (MUWebControl Class) - http://www.update.microsoft.com/microsoftupdate/v6/V5Controls/en/x86/client/muweb_site.cab?1340800070625
O16 - DPF: {D27CDB6E-AE6D-11CF-96B8-444553540000} (Shockwave Flash Object) - http://fpdownload2.macromedia.com/get/shockwave/cabs/flash/swflash.cab
O16 - DPF: {E2883E8F-472F-4FB0-9522-AC9BF37916A7} - http://platformdl.adobe.com/NOS/getPlusPlus/1.6/gp.cab
O18 - Protocol: grooveLocalGWS - {88FED34C-F0CA-4636-A375-3CB6248B04CD} - F:\Programmi\Microsoft Office\Office12\GrooveSystemServices.dll
O18 - Protocol: skype-ie-addon-data - {91774881-D725-4E58-B298-07617B9B86A8} - F:\Programmi\Skype\Toolbars\Internet Explorer\skypeieplugin.dll
O18 - Protocol: skype4com - {FFC8B962-9B40-4DFF-9458-1830C7DD7F5D} - F:\PROGRA~1\FILECO~1\Skype\SKYPE4~1.DLL
O22 - SharedTaskScheduler: Precaricatore Browseui - {438755C2-A8BA-11D1-B96B-00A0C90312E1} - F:\WINDOWS\system32\browseui.dll
O22 - SharedTaskScheduler: Daemon di cache delle categorie di componenti - {8C7461EF-2B13-11d2-BE35-3078302C2030} - F:\WINDOWS\system32\browseui.dll
O23 - Service: Acronis Scheduler2 Service (AcrSch2Svc) - Acronis - F:\Programmi\File comuni\Acronis\Schedule2\schedul2.exe
O23 - Service: Adobe Flash Player Update Service (AdobeFlashPlayerUpdateSvc) - Adobe Systems Incorporated - F:\WINDOWS\system32\Macromed\Flash\FlashPlayerUpdateService.exe
O23 - Service: Avira Pianificatore (AntiVirSchedulerService) - Avira Operations GmbH & Co. KG - F:\Programmi\Avira\AntiVir Desktop\sched.exe
O23 - Service: Avira Real-Time Protection (AntiVirService) - Avira Operations GmbH & Co. KG - F:\Programmi\Avira\AntiVir Desktop\avguard.exe
O23 - Service: Avira Web Protection (AntiVirWebService) - Avira Operations GmbH & Co. KG - F:\Programmi\Avira\AntiVir Desktop\AVWEBGRD.EXE
O23 - Service: Servizio di aggiornamento Ask (APNMCP) - APN LLC. - F:\Programmi\AskPartnerNetwork\Toolbar\apnmcp.exe
O23 - Service: Bluetooth Service (btwdins) - Broadcom Corporation. - F:\Programmi\WIDCOMM\Bluetooth Software\bin\btwdins.exe
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - F:\Programmi\File comuni\InstallShield\Driver\1050\Intel 32\IDriverT.exe
O23 - Service: Java Quick Starter (JavaQuickStarterService) - Oracle Corporation - F:\Programmi\Java\jre7\bin\jqs.exe
O23 - Service: Mozilla Maintenance Service (MozillaMaintenance) - Mozilla Foundation - F:\Programmi\Mozilla Maintenance Service\maintenanceservice.exe
O23 - Service: NVIDIA Update Service Daemon (nvUpdatusService) - NVIDIA Corporation - F:\Programmi\NVIDIA Corporation\NVIDIA Update Core\daemonu.exe
O23 - Service: PC Tools Firewall Plus (PCToolsFirewallPlus) - Unknown owner - F:\Programmi\PC Tools Firewall Plus\FWService.exe
O23 - Service: ServiceLayer - Nokia - F:\Programmi\PC Connectivity Solution\ServiceLayer.exe
O23 - Service: Skype C2C Service - Skype Technologies S.A. - F:\Documents and Settings\All Users\Dati applicazioni\Skype\Toolbars\Skype C2C Service\c2c_service.exe
O23 - Service: Skype Updater (SkypeUpdate) - Skype Technologies - F:\Programmi\Skype\Updater\Updater.exe
O23 - Service: Acronis Try And Decide Service (TryAndDecideService) - Unknown owner - F:\Programmi\File comuni\Acronis\Fomatik\TrueImageTryStartService.exe

--
End of file - 9711 bytes

Il log mettilo nella sezione Sicurezza virus per una maggior visione da parte degli esperti.
Non sono un grande esperto di Hijack però vedo che hai qualche toolbar di troppo e molti programmi e applicazioni che si avviano in automatico all'apertura di Windows non necessari per il suo funzionamento.