Ho seguito alla lettera quanto detto ma il problema di windows installer permane.
Ti rimando il log aggiornato dopo l' operazione. Ti prego, fammi sapere se per poter utilizzare Solidworks devo riformattare e in questo caso avendo la partizione dell' HD posso renistallare solo i programmi in C ?
Attendo un tuo riscontro !!!!!Grazie




Logfile of HijackThis v1.99.1
Scan saved at 17.57.37, on 21/08/2006
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP2 (6.00.2900.2180)

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:\WINDOWS\system32\svchost.exe
C:\WINDOWS\Explorer.EXE
C:\HJT\HijackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = http://g.msn.it/0SEITIT/SAOS01?FORM=TOOLBR
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = http://g.msn.it/0SEITIT/SAOS01?FORM=TOOLBR
R1 - HKCU\Software\Microsoft\Internet Explorer\SearchURL,(Default) = http://g.msn.it/0SEITIT/SAOS01?FORM=TOOLBR
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Local Page =
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Local Page =
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Collegamenti
O2 - BHO: Adobe PDF Reader Link Helper - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Programmi\Adobe\Acrobat 7.0\ActiveX\AcroIEHelper.dll
O3 - Toolbar: Yahoo! Toolbar - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\Programmi\Yahoo!\Companion\Installs\cpn\yt.dll
O4 - HKLM\..\Run: [RaidTool] C:\Programmi\VIA\RAID\raid_tool.exe
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE C:\WINDOWS\system32\NvCpl.dll,NvStartup
O4 - HKLM\..\Run: [nwiz] nwiz.exe /install
O4 - HKLM\..\Run: [NeroFilterCheck] C:\WINDOWS\system32\NeroCheck.exe
O4 - HKLM\..\Run: [ADS TVR Agent] C:\Programmi\ADS Tech\INSTANT TV PVR\Scheduled.exe
O4 - HKLM\..\Run: [ABBYY Community Agent] C:\Programmi\ABBYY FineReader 5.0 Pro\CAgent.exe
O4 - HKLM\..\Run: [SunJavaUpdateSched] C:\Programmi\Java\jre1.5.0_06\bin\jusched.exe
O4 - HKLM\..\Run: [iTunesHelper] "C:\Programmi\iTunes\iTunesHelper.exe"
O4 - HKLM\..\Run: [SoundMan] SOUNDMAN.EXE
O4 - HKLM\..\Run: [TkBellExe] "C:\Programmi\File comuni\Real\Update_OB\realsched.exe" -osboot
O4 - HKLM\..\Run: [Google Desktop Search] "C:\Programmi\Google\Google Desktop Search\GoogleDesktop.exe" /startup
O4 - HKLM\..\Run: [NvMediaCenter] RUNDLL32.EXE C:\WINDOWS\system32\NvMcTray.dll,NvTaskbarInit
O4 - HKLM\..\Run: [Encrypted Disk Auto Mount] rundll32.exe edshell.dll,MountAll
O4 - HKLM\..\Run: [EPSON Stylus Photo R200 Series] C:\WINDOWS\System32\spool\DRIVERS\W32X86\3\E_S4I0H2.EXE /P30 "EPSON Stylus Photo R200 Series" /O6 "USB001" /M "Stylus Photo R200"
O4 - HKLM\..\Run: [Automatico EPSON Stylus Photo R200 Series su PC] C:\WINDOWS\System32\spool\DRIVERS\W32X86\3\E_S4I0H2.EXE /P47 "Automatico EPSON Stylus Photo R200 Series su PC" /O13 "\\PC\EPSONSty" /M "Stylus Photo R200"
O4 - HKLM\..\Run: [InCD] C:\Programmi\Ahead\InCD\InCD.exe
O4 - HKLM\..\Run: [avast!] C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
O4 - HKLM\..\Run: [!ewido] "C:\Programmi\ewido anti-spyware 4.0\ewido.exe" /minimized
O4 - HKCU\..\Run: [EPSON Stylus Photo R200 Series] C:\WINDOWS\System32\spool\DRIVERS\W32X86\3\E_S4I0H2.EXE /P30 "EPSON Stylus Photo R200 Series" /M "Stylus Photo R200" /EF "HKCU"
O4 - HKCU\..\Run: [NBJ] "C:\Programmi\Ahead\Nero BackItUp\NBJ.exe"
O4 - HKCU\..\Run: [updateMgr] "C:\Programmi\Adobe\Acrobat 7.0\Reader\AdobeUpdateManager.exe" AcRdB7_0_7 -reboot 1
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe
O4 - Startup: Collegamento a Mostra Desktop.lnk = C:\Documents and Settings\Paolo\Desktop\Mostra Desktop.scf
O4 - Startup: Webshots.lnk = C:\Programmi\Webshots\Launcher.exe
O4 - Global Startup: Avvio veloce di Adobe Reader.lnk = C:\Programmi\Adobe\Acrobat 7.0\Reader\reader_sl.exe
O8 - Extra context menu item: &MSN Search - res://C:\Programmi\MSN Toolbar Suite\TB\02.05.0000.1082\it-it\msntb.dll/search.htm
O8 - Extra context menu item: Apri in nuova scheda in primo piano - res://C:\Programmi\MSN Toolbar Suite\TAB\02.05.0001.1119\it-it\msntabres.dll/230?287b34a142a14cac8b59f8351c6e3999
O8 - Extra context menu item: Apri in nuova scheda in secondo piano - res://C:\Programmi\MSN Toolbar Suite\TAB\02.05.0001.1119\it-it\msntabres.dll/229?287b34a142a14cac8b59f8351c6e3999
O8 - Extra context menu item: E&sporta in Microsoft Excel - res://C:\PROGRA~1\MICROS~2\OFFICE11\EXCEL.EXE/3000
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Programmi\Java\jre1.5.0_06\bin\npjpi150_06.dll
O9 - Extra 'Tools' menuitem: Sun Java Console - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Programmi\Java\jre1.5.0_06\bin\npjpi150_06.dll
O9 - Extra button: Outpost Firewall Pro Regolazione rapida - {44627E97-789B-40d4-B5C2-58BD171129A1} - C:\WINDOWS\system32\shdocvw.dll
O9 - Extra button: Ricerche - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~2\OFFICE11\REFIEBAR.DLL
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
O9 - Extra button: Trashcan - {072F3B8A-2DA2-40e2-B841-88899F240200} - C:\WINDOWS\system32\shdocvw.dll (HKCU)
O9 - Extra 'Tools' menuitem: Show Trashcan - {072F3B8A-2DA2-40e2-B841-88899F240200} - C:\WINDOWS\system32\shdocvw.dll (HKCU)
O16 - DPF: {6E32070A-766D-4EE6-879C-DC1FA91D2FC3} (MUWebControl Class) - http://update.microsoft.com/microsoftupdate/v6/V5Controls/en/x86/client/muweb_site.cab?1146324396421
O16 - DPF: {79E0C1C0-316D-11D5-A72A-006097BFA1AC} (EPSON Web Printer-SelfTest Control Class) - http://esupport.epson-europe.com/selftest/it/Prg/ESTPTest.cab
O17 - HKLM\System\CCS\Services\Tcpip\..\{FE3A3940-5525-4F14-80E1-B7B3DFE21F73}: NameServer = 212.216.112.222,212.216.172.162
O18 - Protocol: livecall - {828030A1-22C1-4009-854F-8E305202313F} - (no file)
O18 - Protocol: msnim - {828030A1-22C1-4009-854F-8E305202313F} - (no file)
O20 - Winlogon Notify: WgaLogon - C:\WINDOWS\SYSTEM32\WgaLogon.dll
O23 - Service: avast! iAVS4 Control Service (aswUpdSv) - Unknown owner - C:\Programmi\Alwil Software\Avast4\aswUpdSv.exe
O23 - Service: ATK Keyboard Service (ATKKeyboardService) - ASUSTeK COMPUTER INC. - C:\WINDOWS\ATKKBService.exe
O23 - Service: avast! Antivirus - Unknown owner - C:\Programmi\Alwil Software\Avast4\ashServ.exe
O23 - Service: avast! Mail Scanner - Unknown owner - C:\Programmi\Alwil Software\Avast4\ashMaiSv.exe" /service (file missing)
O23 - Service: avast! Web Scanner - Unknown owner - C:\Programmi\Alwil Software\Avast4\ashWebSv.exe" /service (file missing)
O23 - Service: crauto - Unknown owner - C:\WINDOWS\system32\drivers\crauto.exe
O23 - Service: EPSON V3 Service2(02) (EPSON_PM_RPCV2_02) - SEIKO EPSON CORPORATION - C:\WINDOWS\system32\E_S00RP2.EXE
O23 - Service: ewido anti-spyware 4.0 guard - Anti-Malware Development a.s. - C:\Programmi\ewido anti-spyware 4.0\guard.exe
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - C:\Programmi\File comuni\InstallShield\Driver\11\Intel 32\IDriverT.exe
O23 - Service: IMountSRV - Unknown owner - C:\WINDOWS\system32\drivers\IMountSRV.exe
O23 - Service: InCD Helper (InCDsrv) - Nero AG - C:\Programmi\Ahead\InCD\InCDsrv.exe
O23 - Service: iPodService - Apple Computer, Inc. - C:\Programmi\iPod\bin\iPodService.exe
O23 - Service: NVIDIA Display Driver Service (NVSvc) - NVIDIA Corporation - C:\WINDOWS\system32\nvsvc32.exe
O23 - Service: PMounter - Unknown owner - C:\WINDOWS\system32\PMounter.exe

ciao
ti posso solo assicurare , che se avresti continuato la discussione sempre nello stesso post (invece di aprire 3 topic per lo stesso problema ) a questo punto avresti già ricevuto le necessarie procedure per risolvere ..... mi dispiace mai io queste cose non le tollero per niente e quindi mi rifiuto volontariamente di rispondere a questi doppi o tripli post uguali .....

Steven 75 ha pienamente ragione...però io non me la sento di non aiutarti anche se la collera degli altri è giustificatissima!!
Io non saprei leggeri il log ma ti ecco il link di un sito ne quale basta incollare il log e ti verrà comunicato l'elenco dei processi da tenere e quello da fissare.

http://www.hijackthis.de/it
Naturalmente non fidarti completamente del programmino e prima di fissare un processo guarda che non sia un tuo processo e fai un backup.
Spero che il tuo errore (aprire tante discussioni) sia stato solo una distrazionedi uno poco esperto nei forum e spero che non si ripeta.
ciao