Esegui 
spessoil pc non si spenge o non parte completamente windows...
inoltre, a volte capita che quando lo accendo mi parte la scansione del disco, ma non riesce mai a completarla , e sono costretto ad interromperla.
molto spesso mi da errori vari... recentemente mi ha tolto lo sfondo dal desktop e ho problemi con qualche applicazione, come word (mi sfarfalla lo schermo) ed excel (non me lo fa aprire).
penso che ci sia più di un virus, anche se con la scansione del mio antivirus non è venuto fuori niente di importante!
ho fatto anche io la scansione con Hijackthis......
Logfile of HijackThis v1.99.1
Scan saved at 21.54.30, on 30/04/2007
Platform: Windows ME (Win9x 4.90.3000)
MSIE: Internet Explorer v6.00 SP1 (6.00.2800.1106)
Running processes:
C:\WINDOWS\SYSTEM\KERNEL32.DLL
C:\WINDOWS\SYSTEM\MSGSRV32.EXE
C:\WINDOWS\SYSTEM\mmtask.tsk
C:\WINDOWS\SYSTEM\MPREXE.EXE
C:\WINDOWS\SYSTEM\MSTASK.EXE
C:\WINDOWS\SYSTEM\SSDPSRV.EXE
C:\PROGRAMMI\ALWIL SOFTWARE\AVAST4\ASHSERV.EXE
C:\WINDOWS\SYSTEM\NETEYFUC.EXE
C:\WINDOWS\SYSTEM\RNAAPP.EXE
C:\WINDOWS\SYSTEM\TAPISRV.EXE
C:\WINDOWS\SYSTEM\RESTORE\STMGR.EXE
C:\WINDOWS\SYSTEM\RPCSS.EXE
C:\WINDOWS\EXPLORER.EXE
C:\WINDOWS\TASKMON.EXE
C:\WINDOWS\SYSTEM\SYSTRAY.EXE
C:\WINDOWS\PCTVOICE.EXE
C:\PROGRAMMI\ALCATEL\SPEEDTOUCH USB\DRAGDIAG.EXE
C:\WINDOWS\SYSTEM\QTTASK.EXE
C:\WINDOWS\LOADQM.EXE
C:\PROGRAMMI\MegaLab\SPYWARE TERMINATOR\SPYWARE TERMINATOR\SPYWARETERMINATORSHIELD.EXE
C:\WINDOWS\SYSTEM\WMIEXE.EXE
C:\PROGRAMMI\ALWIL SOFTWARE\AVAST4\ASHWEBSV.EXE
C:\PROGRAMMI\MSN APPS\UPDATER\01.03.0000.1005\IT\MSNAPPAU.EXE
C:\WINDOWS\TEMP\UHNFAA.EXE
C:\PROGRAMMI\ANTISPAM OUTLOOK\SFAGENT.EXE
C:\PROGRAMMI\ALWIL SOFTWARE\AVAST4\ASHMAISV.EXE
C:\PROGRAMMI\NIKON\PICTUREPROJECT\NKBMONITOR.EXE
C:\PROGRAMMI\MICROSOFT OFFICE\OFFICE\OSA.EXE
C:\PROGRAMMI\MICROSOFT OFFICE\OFFICE\FINDFAST.EXE
C:\PROGRAMMI\SONY CORPORATION\PICTURE PACKAGE\PICTURE PACKAGE APPLICATIONS\RESIDENCE.EXE
C:\PROGRAMMI\SONY CORPORATION\PICTURE PACKAGE\PICTURE PACKAGE MENU\SONYTRAY.EXE
C:\PROGRAMMI\INTERNET EXPLORER\IEXPLORE.EXE
C:\WINDOWS\SYSTEM\DDHELP.EXE
C:\PROGRAMMI\ADOBE\ACROBAT 6.0\READER\ACRORD32.EXE
C:\WINDOWS\SYSTEM\SPOOL32.EXE
C:\WINDOWS\SYSTEM\ZSPOOL32.EXE
C:\PROGRAMMI\WINZIP\WINZIP32.EXE
C:\WINDOWS\TEMP\HIJACKTHIS.EXE
C:\PROGRAMMI\INTERNET EXPLORER\IEXPLORE.EXE
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = http://g.msn.it/0SEITIT/SAOS01
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://it.yahoo.com/
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Collegamenti
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\PROGRAMMI\ADOBE\ACROBAT 6.0\READER\ACTIVEX\ACROIEHELPER.DLL
O2 - BHO: MSNToolBandBHO - {BDBD1DAD-C946-4A17-ADC1-64B5B4FF55D0} - C:\PROGRAMMI\MSN APPS\MSN TOOLBAR\01.02.5000.1021\IT\MSNTB.DLL
O2 - BHO: ST - {9394EDE7-C8B5-483E-8773-474BF36AF6E4} - C:\PROGRAMMI\MSN APPS\ST\01.03.0000.1005\EN-XU\STMAIN.DLL
O3 - Toolbar: @msdxmLC.dll,-1@1040,&Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINDOWS\SYSTEM\MSDXM.OCX
O3 - Toolbar: Yahoo! Toolbar - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\PROGRAMMI\YAHOO!\COMPANION\INSTALLS\CPN1\YT.DLL
O3 - Toolbar: MSN - {BDAD1DAD-C946-4A17-ADC1-64B5B4FF55D0} - C:\PROGRAMMI\MSN APPS\MSN TOOLBAR\01.02.5000.1021\IT\MSNTB.DLL
O4 - HKLM\..\Run: [ScanRegistry] C:\WINDOWS\scanregw.exe /autorun
O4 - HKLM\..\Run: [TaskMonitor] C:\WINDOWS\taskmon.exe
O4 - HKLM\..\Run: [PCHealth] C:\WINDOWS\PCHealth\Support\PCHSchd.exe -s
O4 - HKLM\..\Run: [SystemTray] SysTray.Exe
O4 - HKLM\..\Run: [LoadPowerProfile] Rundll32.exe powrprof.dll,LoadCurrentPwrScheme
O4 - HKLM\..\Run: [CountrySelection] pctptt.exe
O4 - HKLM\..\Run: [PCTVOICE] pctvoice.exe
O4 - HKLM\..\Run: [SpeedTouch USB Diagnostics] "C:\Programmi\Alcatel\SpeedTouch USB\Dragdiag.exe" /icon
O4 - HKLM\..\Run: [QuickTime Task] "C:\WINDOWS\SYSTEM\QTTASK.EXE" -atboottime
O4 - HKLM\..\Run: [LoadQM] loadqm.exe
O4 - HKLM\..\Run: [SpywareTerminator] "C:\PROGRAMMI\MegaLab\SPYWARE TERMINATOR\SPYWARE TERMINATOR\SpywareTerminatorShield.exe"
O4 - HKLM\..\Run: [SmcService] C:\PROGRA~1\MegaLab\FIREWALL\SMC.EXE -startgui
O4 - HKLM\..\Run: [avast! Web Scanner] C:\PROGRA~1\ALWILS~1\AVAST4\ASHWEBSV.EXE
O4 - HKLM\..\Run: [msnappau] "C:\Programmi\MSN Apps\Updater\01.03.0000.1005\it\msnappau.exe"
O4 - HKLM\..\Run: [UHNFAA.EXE] C:\WINDOWS\TEMP\UHNFAA.EXE
O4 - HKLM\..\Run: [SPAMfighter Agent] "C:\Programmi\Antispam outlook\SFAgent.exe" update delay 60
O4 - HKLM\..\Run: [ashMaiSv] C:\PROGRA~1\ALWILS~1\AVAST4\ashmaisv.exe
O4 - HKLM\..\RunServices: [LoadPowerProfile] Rundll32.exe powrprof.dll,LoadCurrentPwrScheme
O4 - HKLM\..\RunServices: [SchedulingAgent] mstask.exe
O4 - HKLM\..\RunServices: [SSDPSRV] C:\WINDOWS\SYSTEM\ssdpsrv.exe
O4 - HKLM\..\RunServices: [*StateMgr] C:\WINDOWS\System\Restore\StateMgr.exe
O4 - HKLM\..\RunServices: [SmcService] C:\PROGRAMMI\MegaLab\FIREWALL\SMC.EXE
O4 - HKLM\..\RunServices: [avast!] C:\Programmi\Alwil Software\Avast4\ashServ.exe
O4 - Startup: NkbMonitor.exe.lnk = C:\Programmi\Nikon\PictureProject\NkbMonitor.exe
O4 - Startup: Avvio Office.lnk = C:\Programmi\Microsoft Office\Office\OSA.EXE
O4 - Startup: Ricerca rapida.lnk = C:\Programmi\Microsoft Office\Office\FINDFAST.EXE
O4 - Startup: Picture Package VCD Maker.lnk = C:\Programmi\Sony Corporation\Picture Package\Picture Package Applications\Residence.exe
O4 - Startup: Picture Package Menu.lnk = C:\Programmi\Sony Corporation\Picture Package\Picture Package Menu\SonyTray.exe
O9 - Extra button: Related - {c95fe080-8f5d-11d2-a20b-00aa003c157a} - C:\WINDOWS\web\related.htm
O9 - Extra 'Tools' menuitem: Show &Related Links - {c95fe080-8f5d-11d2-a20b-00aa003c157a} - C:\WINDOWS\web\related.htm
O9 - Extra button: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\PROGRA~1\MESSEN~1\MSMSGS.EXE (file missing)
O9 - Extra 'Tools' menuitem: MSN Messenger Service - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\PROGRA~1\MESSEN~1\MSMSGS.EXE (file missing)
O14 - IERESET.INF: START_PAGE_URL=http://www.olidata.it
O16 - DPF: {127698E4-E730-4E5C-A2B1-21490A70C8A1} (CEnroll Class) - https://www.mps.it/CertRenewal/CertCont ... enroll.dll
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