Esegui 
Sembra va che andasse tutto bene, poi ho constatato che non era possibile l'avvio in modalità provvisoria non era possibile e che il ripristino configurazione di sistema non veniva completato, pertanto decidevo di formattarlo, era da due che non lo facevo ed ho pensato che tutto sommato non gli avrebbe fatto male. Pensavo male, però, adesso il pc mi si impianta speso e volentieri, il ripristino conf. di sistema non viene comunque completato, task manager difficilmente riesco ad attivarla, insomma devo continuamente riavviare il pc. Un risultato però l'ho ottenuto: adesso in modalità provvisoria riesco ad avviarlo.....
Ho eseguito una scansione con Kaspersky on-line con esito negativo, idem con Norton.
Ho effettuato un scansione con HijackThis e posto qui sotto il risultato.
Se cortesemente potete dargli una occhiata.
Infine, il pc ha quasi 7 anni, potrebbe trattarsi del disco rigido che comincia a "stancarsi" ???
Vi ringrazio per la collaborazione
Logfile of HijackThis v1.99.1
Scan saved at 18.35.38, on 29/01/2008
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v7.00 (7.00.6000.16574)
Running processes:
C:\WINDOWS\System32\smss.exe
C:\WINDOWS\system32\winlogon.exe
C:\WINDOWS\system32\services.exe
C:\WINDOWS\system32\lsass.exe
C:\WINDOWS\system32\svchost.exe
C:\Programmi\Windows Defender\MsMpEng.exe
C:\WINDOWS\System32\svchost.exe
C:\Programmi\File comuni\Symantec Shared\ccSetMgr.exe
C:\WINDOWS\Explorer.EXE
C:\Programmi\File comuni\Symantec Shared\ccEvtMgr.exe
C:\Programmi\File comuni\Symantec Shared\PIF\{B8E1DD85-8582-4c61-B58F-2F227FCA9A08}\PIFSvc.exe
C:\Programmi\File comuni\Symantec Shared\SNDSrvc.exe
C:\Programmi\File comuni\Symantec Shared\SPBBC\SPBBCSvc.exe
C:\Programmi\File comuni\Symantec Shared\CCPD-LC\symlcsvc.exe
C:\WINDOWS\system32\spoolsv.exe
C:\Programmi\File comuni\Apple\Mobile Device Support\bin\AppleMobileDeviceService.exe
C:\Programmi\Bonjour\mDNSResponder.exe
C:\Programmi\Google\Common\Google Updater\GoogleUpdaterService.exe
C:\Programmi\Norton AntiVirus\navapsvc.exe
C:\Programmi\Norton AntiVirus\IWP\NPFMntor.exe
C:\WINDOWS\System32\svchost.exe
C:\Programmi\Symantec\LiveUpdate\ALUSchedulerSvc.exe
C:\Programmi\File comuni\Symantec Shared\ccApp.exe
C:\WINDOWS\system32\NeroCheck.exe
C:\WINDOWS\system32\ctfmon.exe
C:\Programmi\Messenger\msmsgs.exe
C:\Programmi\Google\Google Updater\GoogleUpdater.exe
C:\Programmi\File comuni\Symantec Shared\Security Console\NSCSRVCE.EXE
C:\Programmi\Internet Explorer\iexplore.exe
C:\Programmi\Symantec\LiveUpdate\AUpdate.exe
C:\PROGRA~1\Symantec\LIVEUP~1\LUCOMS~1.EXE
C:\Programmi\Symantec\LiveUpdate\LuCallbackProxy.exe
C:\Programmi\Symantec\LiveUpdate\LuCallbackProxy.exe
C:\Programmi\Symantec\LiveUpdate\LuCallbackProxy.exe
C:\Programmi\Symantec\LiveUpdate\LuCallbackProxy.exe
C:\PROGRA~1\NORTON~1\IWP\Aleupdat.exe
C:\DOCUME~1\FRASTE~1\IMPOST~1\Temp\Directory temporanea 2 per hijackthis_199.zip\HijackThis.exe
C:\Programmi\Internet Explorer\IEXPLORE.EXE
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://virgilio.alice.it/index.html
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
R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings,ProxyOverride = *.local
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Collegamenti
O2 - BHO: Supporto di collegamento per Adobe PDF Reader - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Programmi\File comuni\Adobe\Acrobat\ActiveX\AcroIEHelper.dll
O2 - BHO: NAV Helper - {A8F38D8D-E480-4D52-B7A2-731BB6995FDD} - C:\Programmi\Norton AntiVirus\NavShExt.dll
O2 - BHO: Google Toolbar Helper - {AA58ED58-01DD-4d91-8333-CF10577473F7} - c:\programmi\google\googletoolbar1.dll
O2 - BHO: Google Toolbar Notifier BHO - {AF69DE43-7D58-4638-B6FA-CE66B5AD205D} - C:\Programmi\Google\GoogleToolbarNotifier\2.1.1119.1736\swg.dll
O3 - Toolbar: Norton AntiVirus - {C4069E3A-68F1-403E-B40E-20066696354B} - C:\Programmi\Norton AntiVirus\NavShExt.dll
O3 - Toolbar: &Google - {2318C2B1-4965-11d4-9B18-009027A5CD4F} - c:\programmi\google\googletoolbar1.dll
O4 - HKLM\..\Run: [ccApp] "C:\Programmi\File comuni\Symantec Shared\ccApp.exe"
O4 - HKLM\..\Run: [Symantec PIF AlertEng] "C:\Programmi\File comuni\Symantec Shared\PIF\{B8E1DD85-8582-4c61-B58F-2F227FCA9A08}\PIFSvc.exe" /a /m "C:\Programmi\File comuni\Symantec Shared\PIF\{B8E1DD85-8582-4c61-B58F-2F227FCA9A08}\AlertEng.dll"
O4 - HKLM\..\Run: [NeroFilterCheck] C:\WINDOWS\system32\NeroCheck.exe
O4 - HKLM\..\Run: [QuickTime Task] "C:\Programmi\QuickTime\QTTask.exe" -atboottime
O4 - HKLM\..\Run: [iTunesHelper] "C:\Programmi\iTunes\iTunesHelper.exe"
O4 - HKLM\..\Run: [Windows Defender] "C:\Programmi\Windows Defender\MSASCui.exe" -hide
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 8.0\Reader\Reader_sl.exe"
O4 - HKCU\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [MSMSGS] "C:\Programmi\Messenger\msmsgs.exe" /background
O4 - HKCU\..\Run: [swg] C:\Programmi\Google\GoogleToolbarNotifier\GoogleToolbarNotifier.exe
O4 - Global Startup: Google Updater.lnk = C:\Programmi\Google\Google Updater\GoogleUpdater.exe
O4 - Global Startup: Microsoft Office.lnk = C:\Programmi\Microsoft Office\Office10\OSA.EXE
O8 - Extra context menu item: E&sporta in Microsoft Excel - res://C:\PROGRA~1\MICROS~2\Office10\EXCEL.EXE/3000
O9 - Extra button: PokerStars - {3AD14F0C-ED16-4e43-B6D8-661B03F6A1EF} - C:\Programmi\PokerStars\PokerStarsUpdate.exe
O9 - Extra button: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Programmi\Messenger\msmsgs.exe
O9 - Extra 'Tools' menuitem: Windows Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Programmi\Messenger\msmsgs.exe
O10 - Unknown file in Winsock LSP: c:\programmi\bonjour\mdnsnsp.dll
O11 - Options group: [INTERNATIONAL] International*
O16 - DPF: {0EB0E74A-2A76-4AB3-A7FB-9BD8C29F7F75} (CKAVWebScan Object) - http://www.kaspersky.com/kos/eng/partne ... nicode.cab
O17 - HKLM\System\CCS\Services\Tcpip\..\{96FB79FF-6975-4C30-8CD6-EE737781DF5D}: NameServer = 85.37.17.14 85.38.28.78
O21 - SSODL: WPDShServiceObj - {AAA288BA-9A4C-45B0-95D7-94D524869DB5} - C:\WINDOWS\system32\WPDShServiceObj.dll
O23 - Service: Apple Mobile Device - Apple, Inc. - C:\Programmi\File comuni\Apple\Mobile Device Support\bin\AppleMobileDeviceService.exe
O23 - Service: Bonjour Service - Apple Inc. - C:\Programmi\Bonjour\mDNSResponder.exe
O23 - Service: Symantec Event Manager (ccEvtMgr) - Symantec Corporation - C:\Programmi\File comuni\Symantec Shared\ccEvtMgr.exe
O23 - Service: Symantec Settings Manager (ccSetMgr) - Symantec Corporation - C:\Programmi\File comuni\Symantec Shared\ccSetMgr.exe
O23 - Service: Google Updater Service (gusvc) - Google - C:\Programmi\Google\Common\Google Updater\GoogleUpdaterService.exe
O23 - Service: Servizio iPod (iPod Service) - Apple Inc. - C:\Programmi\iPod\bin\iPodService.exe
O23 - Service: LiveUpdate - Symantec Corporation - C:\PROGRA~1\Symantec\LIVEUP~1\LUCOMS~1.EXE
O23 - Service: LiveUpdate Notice Service - Unknown owner - C:\Programmi\File comuni\Symantec Shared\PIF\{B8E1DD85-8582-4c61-B58F-2F227FCA9A08}\PIFSvc.exe" /m "C:\Programmi\File comuni\Symantec Shared\PIF\{B8E1DD85-8582-4c61-B58F-2F227FCA9A08}\PifEng.dll (file missing)
O23 - Service: lxcg_device - Unknown owner - C:\WINDOWS\system32\lxcgcoms.exe
O23 - Service: Servizio Auto-Protect di Norton AntiVirus (navapsvc) - Symantec Corporation - C:\Programmi\Norton AntiVirus\navapsvc.exe
O23 - Service: Norton AntiVirus Firewall Monitor Service (NPFMntor) - Symantec Corporation - C:\Programmi\Norton AntiVirus\IWP\NPFMntor.exe
O23 - Service: Norton Protection Center Service (NSCService) - Symantec Corporation - C:\Programmi\File comuni\Symantec Shared\Security Console\NSCSRVCE.EXE
O23 - Service: Symantec AVScan (SAVScan) - Symantec Corporation - C:\Programmi\Norton AntiVirus\SAVScan.exe
O23 - Service: Symantec Network Drivers Service (SNDSrvc) - Symantec Corporation - C:\Programmi\File comuni\Symantec Shared\SNDSrvc.exe
O23 - Service: SPBBCSvc - Symantec Corporation - C:\Programmi\File comuni\Symantec Shared\SPBBC\SPBBCSvc.exe
O23 - Service: Symantec Core LC - Symantec Corporation - C:\Programmi\File comuni\Symantec Shared\CCPD-LC\symlcsvc.exe
O23 - Service: Utilità di pianificazione di LiveUpdate automatico - Symantec Corporation - C:\Programmi\Symantec\LiveUpdate\ALUSchedulerSvc.exe
![[cry+]](http://www.megalab.it/forum/images/smilies/cry.gif "Piangere a dirotto")