Saluti a tutti . Il pc non si avvia e mi compare questa scritta , ho inserito il cd di xp e ho provato a correggere con CHKDSK / R ma al riavvio mi ricompare .
Forse ho un virus , mi controllate il log ? Grazie .

Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 15.27.58, on 06/06/2008
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v7.00 (7.00.6000.16640)
Boot mode: Normal

Running processes:
D:\WINDOWS\System32\smss.exe
D:\WINDOWS\system32\winlogon.exe
D:\WINDOWS\system32\services.exe
D:\WINDOWS\system32\lsass.exe
D:\WINDOWS\system32\svchost.exe
D:\Programmi\Windows Defender\MsMpEng.exe
D:\WINDOWS\System32\svchost.exe
D:\WINDOWS\system32\ZoneLabs\vsmon.exe
D:\WINDOWS\Explorer.EXE
D:\Programmi\Alwil Software\Avast4\aswUpdSv.exe
D:\Programmi\Alwil Software\Avast4\ashServ.exe
D:\WINDOWS\system32\spoolsv.exe
D:\Programmi\File comuni\Apple\Mobile Device Support\bin\AppleMobileDeviceService.exe
D:\Programmi\Bonjour\mDNSResponder.exe
D:\Programmi\Spyware Terminator\sp_rsser.exe
D:\Programmi\Alwil Software\Avast4\ashMaiSv.exe
D:\Programmi\Alwil Software\Avast4\ashWebSv.exe
D:\Programmi\Zone Labs\ZoneAlarm\zlclient.exe
D:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
D:\Programmi\ClamWin\bin\ClamTray.exe
D:\Programmi\Windows Defender\MSASCui.exe
D:\Programmi\iTunes\iTunesHelper.exe
D:\Programmi\Spyware Terminator\SpywareTerminatorShield.exe
D:\Programmi\Spybot - Search & Destroy\TeaTimer.exe
D:\WINDOWS\system32\ctfmon.exe
D:\Programmi\iPod\bin\iPodService.exe
D:\WINDOWS\system32\msfeedssync.exe
D:\Programmi\Internet Explorer\iexplore.exe
D:\Programmi\File comuni\Microsoft Shared\Windows Live\WLLoginProxy.exe
D:\Programmi\Trend Micro\HijackThis\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.yahoo.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 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Collegamenti
R3 - URLSearchHook: Winamp Search Class - {57BCA5FA-5DBB-45a2-B558-1755C3F6253B} - D:\Programmi\Winamp Toolbar\winamptb.dll
O2 - BHO: Supporto di collegamento per Adobe PDF Reader - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - D:\Programmi\File comuni\Adobe\Acrobat\ActiveX\AcroIEHelper.dll
O2 - BHO: Winamp Toolbar Loader - {25CEE8EC-5730-41bc-8B58-22DDC8AB8C20} - D:\Programmi\Winamp Toolbar\winamptb.dll
O2 - BHO: Spybot-S&D IE Protection - {53707962-6F74-2D53-2644-206D7942484F} - D:\PROGRA~1\SPYBOT~1\SDHelper.dll
O2 - BHO: Groove GFS Browser Helper - {72853161-30C5-4D22-B7F9-0BBC1D38A37E} - D:\PROGRA~1\MICROS~2\Office12\GRA8E1~1.DLL
O2 - BHO: Guida per l'accesso a Windows Live - {9030D464-4C02-4ABF-8ECC-5164760863C6} - D:\Programmi\File comuni\Microsoft Shared\Windows Live\WindowsLiveLogin.dll
O2 - BHO: Windows Live Toolbar Helper - {BDBD1DAD-C946-4A17-ADC1-64B5B4FF55D0} - D:\Programmi\Windows Live Toolbar\msntb.dll
O2 - BHO: EpsonToolBandKicker Class - {E99421FB-68DD-40F0-B4AC-B7027CAE2F1A} - D:\Programmi\EPSON\EPSON Web-To-Page\EPSON Web-To-Page.dll
O3 - Toolbar: EPSON Web-To-Page - {EE5D279F-081B-4404-994D-C6B60AAEBA6D} - D:\Programmi\EPSON\EPSON Web-To-Page\EPSON Web-To-Page.dll
O3 - Toolbar: Windows Live Toolbar - {BDAD1DAD-C946-4A17-ADC1-64B5B4FF55D0} - D:\Programmi\Windows Live Toolbar\msntb.dll
O3 - Toolbar: Winamp Toolbar - {EBF2BA02-9094-4c5a-858B-BB198F3D8DE2} - D:\Programmi\Winamp Toolbar\winamptb.dll
O4 - HKLM\..\Run: [ZoneAlarm Client] "D:\Programmi\Zone Labs\ZoneAlarm\zlclient.exe"
O4 - HKLM\..\Run: [avast!] D:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
O4 - HKLM\..\Run: [ClamWin] "D:\Programmi\ClamWin\bin\ClamTray.exe" --logon
O4 - HKLM\..\Run: [Windows Defender] "D:\Programmi\Windows Defender\MSASCui.exe" -hide
O4 - HKLM\..\Run: [iTunesHelper] "D:\Programmi\iTunes\iTunesHelper.exe"
O4 - HKLM\..\Run: [SpywareTerminator] "D:\Programmi\Spyware Terminator\SpywareTerminatorShield.exe"
O4 - HKLM\..\Run: [QuickTime Task] "D:\Programmi\QuickTime\qttask.exe" -atboottime
O4 - HKCU\..\Run: [SpybotSD TeaTimer] D:\Programmi\Spybot - Search & Destroy\TeaTimer.exe
O4 - HKCU\..\Run: [ctfmon.exe] D:\WINDOWS\system32\ctfmon.exe
O4 - HKUS\S-1-5-19\..\Run: [CTFMON.EXE] D:\WINDOWS\System32\CTFMON.EXE (User 'SERVIZIO LOCALE')
O4 - HKUS\S-1-5-20\..\Run: [CTFMON.EXE] D:\WINDOWS\System32\CTFMON.EXE (User 'SERVIZIO DI RETE')
O4 - HKUS\S-1-5-18\..\Run: [CTFMON.EXE] D:\WINDOWS\System32\CTFMON.EXE (User 'SYSTEM')
O4 - HKUS\.DEFAULT\..\Run: [CTFMON.EXE] D:\WINDOWS\System32\CTFMON.EXE (User 'Default user')
O8 - Extra context menu item: &Winamp Search - D:\Documents and Settings\All Users\Dati applicazioni\Winamp Toolbar\ieToolbar\resources\en-US\local\search.html
O8 - Extra context menu item: &Windows Live Search - res://D:\Programmi\Windows Live Toolbar\msntb.dll/search.htm
O8 - Extra context menu item: Add to Windows &Live Favorites - http://favorites.live.com/quickadd.aspx
O8 - Extra context menu item: E&sporta in Microsoft Excel - res://D:\PROGRA~1\MICROS~2\Office12\EXCEL.EXE/3000
O9 - Extra button: Inserisci blog - {219C3416-8CB2-491a-A3C7-D9FCDDC9D600} - D:\Programmi\Windows Live\Writer\WriterBrowserExtension.dll
O9 - Extra 'Tools' menuitem: Inserisci &blog in Windows Live Writer - {219C3416-8CB2-491a-A3C7-D9FCDDC9D600} - D:\Programmi\Windows Live\Writer\WriterBrowserExtension.dll
O9 - Extra button: Invia a OneNote - {2670000A-7350-4f3c-8081-5663EE0C6C49} - D:\PROGRA~1\MICROS~2\Office12\ONBttnIE.dll
O9 - Extra 'Tools' menuitem: I&nvia a OneNote - {2670000A-7350-4f3c-8081-5663EE0C6C49} - D:\PROGRA~1\MICROS~2\Office12\ONBttnIE.dll
O9 - Extra button: Research - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - D:\PROGRA~1\MICROS~2\Office12\REFIEBAR.DLL
O9 - Extra button: (no name) - {DFB852A3-47F8-48C4-A200-58CAB36FD2A2} - D:\PROGRA~1\SPYBOT~1\SDHelper.dll
O9 - Extra 'Tools' menuitem: Spybot - Search & Destroy Configuration - {DFB852A3-47F8-48C4-A200-58CAB36FD2A2} - D:\PROGRA~1\SPYBOT~1\SDHelper.dll
O9 - Extra button: (no name) - {e2e2dd38-d088-4134-82b7-f2ba38496583} - D:\WINDOWS\Network Diagnostic\xpnetdiag.exe
O9 - Extra 'Tools' menuitem: @xpsp3res.dll,-20001 - {e2e2dd38-d088-4134-82b7-f2ba38496583} - D:\WINDOWS\Network Diagnostic\xpnetdiag.exe
O9 - Extra button: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - D:\Programmi\Messenger\msmsgs.exe
O9 - Extra 'Tools' menuitem: Windows Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - D:\Programmi\Messenger\msmsgs.exe
O16 - DPF: {02BF25D5-8C17-4B23-BC80-D3488ABDDC6B} (QuickTime Object) - http://appldnld.apple.com.edgesuite.net/content.info.apple.com/QuickTime/qtactivex/qtplugin.cab
O16 - DPF: {2BC66F54-93A8-11D3-BEB6-00105AA9B6AE} (Symantec AntiVirus scanner) - http://security.symantec.com/sscv6/SharedContent/vc/bin/AvSniff.cab
O16 - DPF: {6414512B-B978-451D-A0D8-FCFDF33E833C} (WUWebControl Class) - http://www.update.microsoft.com/windowsupdate/v6/V5Controls/en/x86/client/wuweb_site.cab?1198515807171
O16 - DPF: {644E432F-49D3-41A1-8DD5-E099162EEEC5} (Symantec RuFSI Utility Class) - http://security.symantec.com/sscv6/SharedContent/common/bin/cabsa.cab
O16 - DPF: {6F15128C-E66A-490C-B848-5000B5ABEEAC} (HP Download Manager) - https://h20436.www2.hp.com/ediags/dex/secure/HPDEXAXO.cab
O17 - HKLM\System\CCS\Services\Tcpip\..\{E408F904-013A-4829-BDA5-D2163C826874}: NameServer = 85.37.17.14 85.38.28.78
O18 - Protocol: grooveLocalGWS - {88FED34C-F0CA-4636-A375-3CB6248B04CD} - D:\PROGRA~1\MICROS~2\Office12\GR99D3~1.DLL
O23 - Service: Apple Mobile Device - Apple, Inc. - D:\Programmi\File comuni\Apple\Mobile Device Support\bin\AppleMobileDeviceService.exe
O23 - Service: avast! iAVS4 Control Service (aswUpdSv) - ALWIL Software - D:\Programmi\Alwil Software\Avast4\aswUpdSv.exe
O23 - Service: Autodesk Licensing Service - Autodesk - D:\Programmi\File comuni\Autodesk Shared\Service\AdskScSrv.exe
O23 - Service: avast! Antivirus - ALWIL Software - D:\Programmi\Alwil Software\Avast4\ashServ.exe
O23 - Service: avast! Mail Scanner - ALWIL Software - D:\Programmi\Alwil Software\Avast4\ashMaiSv.exe
O23 - Service: avast! Web Scanner - ALWIL Software - D:\Programmi\Alwil Software\Avast4\ashWebSv.exe
O23 - Service: Bonjour Service - Apple Inc. - D:\Programmi\Bonjour\mDNSResponder.exe
O23 - Service: Google Updater Service (gusvc) - Google - D:\Programmi\Google\Common\Google Updater\GoogleUpdaterService.exe
O23 - Service: Servizio iPod (iPod Service) - Apple Inc. - D:\Programmi\iPod\bin\iPodService.exe
O23 - Service: Spyware Terminator Realtime Shield Service (sp_rssrv) - Crawler.com - D:\Programmi\Spyware Terminator\sp_rsser.exe
O23 - Service: TuneUp Drive Defrag Service (TuneUp.Defrag) - TuneUp Software GmbH - D:\WINDOWS\System32\TuneUpDefragService.exe
O23 - Service: TrueVector Internet Monitor (vsmon) - Zone Labs, LLC - D:\WINDOWS\system32\ZoneLabs\vsmon.exe

--
End of file - 9031 bytes

Ciao
Assicurati di avere accesso a file e cartelle nascosti
(Pannello di controllo-> Opzioni Cartella-> Visualizzazione)
1) Metti la spunta su: Visualizza file e cartelle nascoste
2) Togli la spunta: nascondi file protetti di sistema

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 in modalità provvisoria http://guide.aiutamici.com/guide?C1=7&C2=68&ID=80122

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
O8 - Extra context menu item: &Winamp Search - D:\Documents and Settings\All Users\Dati applicazioni\Winamp Toolbar\ieToolbar\resources\en-US\local\search.html

Trova e cancella i file in rosso:
D:\Documents and Settings\All Users\Dati applicazioni\Winamp Toolbar\ieToolbar\resources\en-US\local\search.html

Scarica VIRIT :
http://www.tgsoft.it/italy/download.htm lo aggiorni (cliccando sulla parabola in alto) e lo fai girare in Modalità Provvisoria (è molto importante).

Scarica Spy-Bot da qui http://www.aiutaamici.com/software?ID=10831 e fai una scansione sempre in Modalità Provvisoria.

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

Riavvia il computer.

Fai una scansione on-line con questo http://housecall.trendmicro.com/it/
Ricordati di rinascondere le cartelle di sistema;
Riattiva il ripristino configurazione di sistema e, se tutto è a posto, creane uno nuovo.

Ciao.
Start\Pannello di Controllo.
Fra tutte le icone,non c'è "Mouse"? (passa alla visualizzazione per categorie)
Se c'è,cliccaci sopra,poi clicca Hardware,controlla se la periferica funziona correttamente.
Poi clicca su Proprietà,e controlla se i Drivers funzionano.
Al limite prova aggiornarli.
Anche uno ScanDisk approfondito,non guasterebbe, per correggere eventuali errori del Disco Rigido.