Ciao, siamo nei guai!
Stasera il portatile che mio figlio usa a scuola non va, non si aprono più i documenti di word, non stampa nulla... ho fatto la scansione con Avira ma non ha trovato nulla, vi posto il log di Hjiack This.... Grazie
Simonetta
Logfile of Trend Micro HijackThis v2.0.4
Scan saved at 22:55:23, on 16/02/2012
Platform: Windows 7 (WinNT 6.00.3504)
MSIE: Internet Explorer v8.00 (8.00.7600.16930)
Boot mode: Normal

Running processes:
C:\Program Files (x86)\EgisTec MyWinLocker\x86\mwlDaemon.exe
C:\Windows\PLFSetI.exe
C:\Windows\System32\spool\drivers\x64\3\WrtMon.exe
C:\Program Files (x86)\NewSoft\Presto! PageManager 8 Standard\Pmsb.exe
C:\Windows\System32\spool\drivers\x64\3\WrtProc.exe
C:\Program Files (x86)\EgisTec IPS\PmmUpdate.exe
C:\Program Files (x86)\NewTech Infosystems\Acer Backup Manager\BackupManagerTray.exe
C:\Program Files (x86)\Launch Manager\LManager.exe
C:\Program Files (x86)\Avira\AntiVir Desktop\avgnt.exe
C:\Program Files (x86)\EgisTec IPS\EgisUpdate.exe
C:\Program Files (x86)\Common Files\microsoft shared\virtualization handler\cvh.exe
C:\Program Files (x86)\Common Files\microsoft shared\virtualization handler\OfficeVirt.exe
Q:\140066.ita\Office14\OffSpon.EXE
C:\Program Files (x86)\Internet Explorer\iexplore.exe
C:\Program Files (x86)\Internet Explorer\iexplore.exe
C:\Windows\SysWOW64\Macromed\Flash\FlashUtil11e_ActiveX.exe
C:\Users\Simonetta\Desktop\PROGRAMMI\ANTIVIRUS\HiJackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://acer.msn.com
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.google.it/
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://acer.msn.com
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://acer.msn.com
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: AcroIEHelperStub - {18DF081C-E8AD-4283-A596-FA578C2EBDC3} - C:\Program Files (x86)\Common Files\Adobe\Acrobat\ActiveX\AcroIEHelperShim.dll
O2 - BHO: Guida per l'accesso a Windows Live ID - {9030D464-4C02-4ABF-8ECC-5164760863C6} - C:\Program Files (x86)\Common Files\Microsoft Shared\Windows Live\WindowsLiveLogin.dll
O2 - BHO: McAfee SiteAdvisor BHO - {B164E929-A1B6-4A06-B104-2CD0E90A88FF} - c:\PROGRA~2\mcafee\SITEAD~1\mcieplg.dll
O2 - BHO: WOT Helper - {C920E44A-7F78-4E64-BDD7-A57026E7FEB7} - C:\Program Files (x86)\WOT\WOT.dll
O3 - Toolbar: McAfee SiteAdvisor Toolbar - {0EBBBE48-BAD4-4B4C-8E5A-516ABECAE064} - c:\PROGRA~2\mcafee\SITEAD~1\mcieplg.dll
O3 - Toolbar: WOT - {71576546-354D-41c9-AAE8-31F2EC22BF0D} - C:\Program Files (x86)\WOT\WOT.dll
O4 - HKLM\..\Run: [SuiteTray] "C:\Program Files (x86)\EgisTec MyWinLockerSuite\x86\SuiteTray.exe"
O4 - HKLM\..\Run: [EgisUpdate] "C:\Program Files (x86)\EgisTec IPS\EgisUpdate.exe" -d
O4 - HKLM\..\Run: [EgisTecPMMUpdate] "C:\Program Files (x86)\EgisTec IPS\PmmUpdate.exe"
O4 - HKLM\..\Run: [Norton Online Backup] C:\Program Files (x86)\Symantec\Norton Online Backup\NOBuClient.exe
O4 - HKLM\..\Run: [Adobe Reader Speed Launcher] "C:\Program Files (x86)\Adobe\Reader 9.0\Reader\Reader_sl.exe"
O4 - HKLM\..\Run: [BackupManagerTray] "C:\Program Files (x86)\NewTech Infosystems\Acer Backup Manager\BackupManagerTray.exe" -h -k
O4 - HKLM\..\Run: [StartCCC] "C:\Program Files (x86)\ATI Technologies\ATI.ACE\Core-Static\CLIStart.exe" MSRun
O4 - HKLM\..\Run: [LManager] C:\Program Files (x86)\Launch Manager\LManager.exe
O4 - HKLM\..\Run: [avgnt] "C:\Program Files (x86)\Avira\AntiVir Desktop\avgnt.exe" /min
O4 - HKLM\..\Run: [VoiceServer] C:\Program Files (x86)\VoicePanel\VoiceServer.exe
O4 - HKCU\..\Run: [SFRCalculator] "C:\Program Files (x86)\SFR\SFR Calculator\SFRCalculator.exe" * autostart
O4 - HKCU\..\Run: [Scan Buttons] C:\Program Files (x86)\NewSoft\Presto! PageManager 8 Standard\PMSB.EXE
O4 - HKCU\..\Run: [iDailyDiary] "C:\PROGRA~2\IDAILY~1\iDD.exe" /LOGMIN
O4 - HKCU\..\Run: [EPSON BX300F Series] C:\Windows\system32\spool\DRIVERS\x64\3\E_IATIEJE.EXE /FU "C:\Windows\TEMP\E_S5E65.tmp" /EF "HKCU"
O8 - Extra context menu item: &Point&&Go - C:\Program Files (x86)\Common Files\Expert System\PGPlatform\PGPlatform.htm
O9 - Extra button: Inserisci blog - {219C3416-8CB2-491a-A3C7-D9FCDDC9D600} - C:\Program Files (x86)\Windows Live\Writer\WriterBrowserExtension.dll
O9 - Extra 'Tools' menuitem: Inserisci &blog in Windows Live Writer - {219C3416-8CB2-491a-A3C7-D9FCDDC9D600} - C:\Program Files (x86)\Windows Live\Writer\WriterBrowserExtension.dll
O10 - Unknown file in Winsock LSP: c:\program files (x86)\common files\microsoft shared\windows live\wlidnsp.dll
O10 - Unknown file in Winsock LSP: c:\program files (x86)\common files\microsoft shared\windows live\wlidnsp.dll
O18 - Protocol: dssrequest - {5513F07E-936B-4E52-9B00-067394E91CC5} - c:\PROGRA~2\mcafee\SITEAD~1\mcieplg.dll
O18 - Protocol: sacore - {5513F07E-936B-4E52-9B00-067394E91CC5} - c:\PROGRA~2\mcafee\SITEAD~1\mcieplg.dll
O18 - Protocol: wot - {C2A44D6B-CB9F-4663-88A6-DF2F26E4D952} - C:\Program Files (x86)\WOT\WOT.dll
O23 - Service: @%SystemRoot%\system32\Alg.exe,-112 (ALG) - Unknown owner - C:\Windows\System32\alg.exe (file missing)
O23 - Service: AMD External Events Utility - Unknown owner - C:\Windows\system32\atiesrxx.exe (file missing)
O23 - Service: Avira AntiVir Scheduler (AntiVirScheduler) - Avira GmbH - C:\Program Files (x86)\Avira\AntiVir Desktop\sched.exe
O23 - Service: Avira AntiVir Guard (AntiVirService) - Avira GmbH - C:\Program Files (x86)\Avira\AntiVir Desktop\avguard.exe
O23 - Service: Dritek WMI Service (DsiWMIService) - Dritek System Inc. - C:\Program Files (x86)\Launch Manager\dsiwmis.exe
O23 - Service: @%SystemRoot%\system32\efssvc.dll,-100 (EFS) - Unknown owner - C:\Windows\System32\lsass.exe (file missing)
O23 - Service: Acer ePower Service (ePowerSvc) - Acer Incorporated - C:\Program Files\Acer\Acer ePower Management\ePowerSvc.exe
O23 - Service: EPSON V5 Service4(01) (EPSON_EB_RPCV4_01) - SEIKO EPSON CORPORATION - C:\ProgramData\EPSON\EPW!3 SSRP\E_S40STB.EXE
O23 - Service: EPSON V3 Service4(01) (EPSON_PM_RPCV4_01) - SEIKO EPSON CORPORATION - C:\ProgramData\EPSON\EPW!3 SSRP\E_S40RPB.EXE
O23 - Service: @%systemroot%\system32\fxsresm.dll,-118 (Fax) - Unknown owner - C:\Windows\system32\fxssvc.exe (file missing)
O23 - Service: FLEXnet Licensing Service - Acresso Software Inc. - C:\Program Files (x86)\Common Files\Macrovision Shared\FLEXnet Publisher\FNPLicensingService.exe
O23 - Service: GREGService - Acer Incorporated - C:\Program Files (x86)\Acer\Registration\GREGsvc.exe
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - C:\Program Files (x86)\Common Files\InstallShield\Driver\1050\Intel 32\IDriverT.exe
O23 - Service: @keyiso.dll,-100 (KeyIso) - Unknown owner - C:\Windows\system32\lsass.exe (file missing)
O23 - Service: McAfee SiteAdvisor Service - McAfee, Inc. - c:\PROGRA~2\mcafee\SITEAD~1\McSACore.exe
O23 - Service: @comres.dll,-2797 (MSDTC) - Unknown owner - C:\Windows\System32\msdtc.exe (file missing)
O23 - Service: MyWinLocker Service (MWLService) - Egis Technology Inc. - C:\Program Files (x86)\EgisTec MyWinLocker\x86\MWLService.exe
O23 - Service: @%SystemRoot%\System32\netlogon.dll,-102 (Netlogon) - Unknown owner - C:\Windows\system32\lsass.exe (file missing)
O23 - Service: Norton Online Backup (NOBU) - Symantec Corporation - C:\Program Files (x86)\Symantec\Norton Online Backup\NOBuAgent.exe
O23 - Service: NTI IScheduleSvc - NewTech Infosystems, Inc. - C:\Program Files (x86)\NewTech Infosystems\Acer Backup Manager\IScheduleSvc.exe
O23 - Service: @%systemroot%\system32\psbase.dll,-300 (ProtectedStorage) - 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: @%SystemRoot%\system32\ui0detect.exe,-101 (UI0Detect) - Unknown owner - C:\Windows\system32\UI0Detect.exe (file missing)
O23 - Service: Updater Service - Acer Group - C:\Program Files\Acer\Acer Updater\UpdaterService.exe
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: @%systemroot%\system32\vssvc.exe,-102 (VSS) - Unknown owner - C:\Windows\system32\vssvc.exe (file missing)
O23 - Service: @%SystemRoot%\system32\Wat\WatUX.exe,-601 (WatAdminSvc) - Unknown owner - C:\Windows\system32\Wat\WatAdminSvc.exe (file missing)
O23 - Service: @%systemroot%\system32\wbengine.exe,-104 (wbengine) - Unknown owner - C:\Windows\system32\wbengine.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 - 10029 bytes

Ciao simonetta, il log non presenta problemi a parte qualche voce inutile da eliminare.
I programmi della NewTech o EgisTec IPS li avete installati voi ? Li conosci ?
Chiudi tutti i programmi e disconnesso lanci HJT e clicca sul secondo pulsante: Do a system scan only poi metti la spunta alle voci che ti indico e alla fine clic su Fix checked.

O3 - Toolbar: McAfee SiteAdvisor Toolbar - {0EBBBE48-BAD4-4B4C-8E5A-516ABECAE064} - c:\PROGRA~2\mcafee\SITEAD~1\mcieplg.dll
O3 - Toolbar: WOT - {71576546-354D-41c9-AAE8-31F2EC22BF0D} - C:\Program Files (x86)\WOT\WOT.dll
O4 - HKLM\..\Run: [SuiteTray] "C:\Program Files (x86)\EgisTec MyWinLockerSuite\x86\SuiteTray.exe"
O4 - HKLM\..\Run: [EgisUpdate] "C:\Program Files (x86)\EgisTec IPS\EgisUpdate.exe" -d
O4 - HKLM\..\Run: [EgisTecPMMUpdate] "C:\Program Files (x86)\EgisTec IPS\PmmUpdate.exe"
O4 - HKLM\..\Run: [Norton Online Backup] C:\Program Files (x86)\Symantec\Norton Online Backup\NOBuClient.exe
O4 - HKLM\..\Run: [Adobe Reader Speed Launcher] "C:\Program Files (x86)\Adobe\Reader 9.0\Reader\Reader_sl.exe"
O4 - HKLM\..\Run: [BackupManagerTray] "C:\Program Files (x86)\NewTech Infosystems\Acer Backup Manager\BackupManagerTray.exe" -h -k
O4 - HKLM\..\Run: [StartCCC] "C:\Program Files (x86)\ATI Technologies\ATI.ACE\Core-Static\CLIStart.exe" MSRun
O4 - HKLM\..\Run: [LManager] C:\Program Files (x86)\Launch Manager\LManager.exe
O4 - HKLM\..\Run: [VoiceServer] C:\Program Files (x86)\VoicePanel\VoiceServer.exe
O4 - HKCU\..\Run: [SFRCalculator] "C:\Program Files (x86)\SFR\SFR Calculator\SFRCalculator.exe" * autostart
O4 - HKCU\..\Run: [Scan Buttons] C:\Program Files (x86)\NewSoft\Presto! PageManager 8 Standard\PMSB.EXE
O4 - HKCU\..\Run: [iDailyDiary] "C:\PROGRA~2\IDAILY~1\iDD.exe" /LOGMIN
O4 - HKCU\..\Run: [EPSON BX300F Series] C:\Windows\system32\spool\DRIVERS\x64\3\E_IATIEJE.EXE /FU "C:\Windows\TEMP\E_S5E65.tmp" /EF "HKCU"

Poi fai una pulizia con Ccleaner compreso il Registro.
Installa Malwarebytes QUI lo aggiorni e poi fai una scansione COMPLETA non veloce, elimina tutto quello che trova.
Fai sapere.

Elimina le voci che ti ho indicato.
Poi scarica Virit Lite QUI installalo sul desktop poi aggiornalo, riavvia il pc in modalità provvisoria e fai una scansione, quello che trova eliminalo.

OK, tutto è bene quel che finisce bene. Ciao