Chiedo aiuto: pc lento nell'esecuzione pgm, mentre crhome si avvia 3 volte.
Allego log Hijack (non ho ancora imparato a mandarlvelo con wikisend, chiedo scusa).
Avast 8 non rileva niente.

Logfile of Trend Micro HijackThis v2.0.5
Scan saved at 3.08.02, on 20/05/2013
Platform: Windows XP SP3 (WinNT 5.01.2600)
MSIE: Internet Explorer v8.00 (8.00.6001.18702)


Boot mode: Normal

Running processes:
C:\WINDOWS\System32\smss.exe
C:\WINDOWS\system32\winlogon.exe
C:\WINDOWS\system32\services.exe
C:\WINDOWS\system32\lsass.exe
C:\Programmi\IObit\Advanced SystemCare 6\ASCService.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\system32\svchost.exe
C:\Programmi\Alwil Software\Avast5\AvastSvc.exe
C:\WINDOWS\Explorer.EXE
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\acs.exe
C:\Programmi\IObit\Advanced SystemCare 6\Monitor.exe
C:\Programmi\File comuni\Acronis\Schedule2\schedul2.exe
C:\Programmi\File comuni\Acronis\CDP\afcdpsrv.exe
C:\Programmi\Java\jre7\bin\jqs.exe
C:\Programmi\Malwarebytes' Anti-Malware\mbamscheduler.exe
C:\Programmi\NVIDIA Corporation\Performance Drivers\nvPDsvc.exe
C:\WINDOWS\system32\nvsvc32.exe
C:\Programmi\Raxco\PerfectDisk10\PDAgent.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\system32\wbem\wmiapsrv.exe
C:\Programmi\Alwil Software\Avast5\avastUI.exe
C:\WINDOWS\RTHDCPL.EXE
C:\programmi\syncrosoft\pos\h2o\cledx.exe
C:\programmi\acronis\trueimagehome\trueimagemonitor.exe
C:\WINDOWS\system32\RunDLL32.exe
C:\Programmi\File comuni\Java\Java Update\jusched.exe
C:\WINDOWS\system32\ctfmon.exe
C:\Documents and Settings\piero\Desktop\PROGRAMMI PULIZIA\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.google.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\Search,SearchAssistant =
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: Java(tm) Plug-In SSV Helper - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Programmi\Java\jre7\bin\ssv.dll
O2 - BHO: avast! WebRep - {8E5E2654-AD2D-48bf-AC2D-D17F00898D06} - C:\Programmi\Alwil Software\Avast5\aswWebRepIE.dll
O2 - BHO: FlashGetBHO - {b070d3e3-fec0-47d9-8e8a-99d4eeb3d3b0} - C:\Documents and Settings\piero\Dati applicazioni\FlashGetBHO\FlashGetBHO3.dll
O2 - BHO: Advanced SystemCare Browser Protection - {BA0C978D-D909-49B6-AFE2-8BDE245DC7E6} - C:\PROGRA~1\IObit\ADVANC~4\BROWER~1\ASCPLU~1.DLL
O2 - BHO: Java(tm) Plug-In 2 SSV Helper - {DBC80044-A445-435b-BC74-9C25C1C588A9} - C:\Programmi\Java\jre7\bin\jp2ssv.dll
O3 - Toolbar: avast! WebRep - {8E5E2654-AD2D-48bf-AC2D-D17F00898D06} - C:\Programmi\Alwil Software\Avast5\aswWebRepIE.dll
O4 - HKLM\..\Run: [avast5] "C:\Programmi\Alwil Software\Avast5\avastUI.exe" /nogui
O4 - HKLM\..\Run: [RTHDCPL] RTHDCPL.EXE
O4 - HKLM\..\Run: [UpdReg] C:\WINDOWS\UpdReg.EXE
O4 - HKLM\..\Run: [H2O] c:\programmi\syncrosoft\pos\h2o\cledx.exe
O4 - HKLM\..\Run: [TrueImageMonitor.exe] c:\programmi\acronis\trueimagehome\trueimagemonitor.exe
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE C:\WINDOWS\system32\NvCpl.dll,NvStartup
O4 - HKLM\..\Run: [NvMediaCenter] RunDLL32.exe NvMCTray.dll,NvTaskbarInit -login
O4 - HKLM\..\Run: [SunJavaUpdateSched] "C:\Programmi\File comuni\Java\Java Update\jusched.exe"
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [SpybotSD TeaTimer] C:\Programmi\Spybot - Search & Destroy\TeaTimer.exe
O4 - HKUS\S-1-5-19\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\CTFMON.EXE (User 'SERVIZIO LOCALE')
O4 - HKUS\S-1-5-20\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\CTFMON.EXE (User 'SERVIZIO DI RETE')
O4 - HKUS\S-1-5-21-220523388-329068152-839522115-1005\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\CTFMON.EXE (User 'UpdatusUser')
O4 - HKUS\S-1-5-18\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\CTFMON.EXE (User 'SYSTEM')
O4 - HKUS\.DEFAULT\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\CTFMON.EXE (User 'Default user')
O8 - Extra context menu item: Download all by FlashGet3 - C:\Documents and Settings\piero\Dati applicazioni\FlashGetBHO\GetAllUrl.htm
O8 - Extra context menu item: Download by FlashGet3 - C:\Documents and Settings\piero\Dati applicazioni\FlashGetBHO\GetUrl.htm
O9 - Extra button: (no name) - {e2e2dd38-d088-4134-82b7-f2ba38496583} - C:\WINDOWS\Network Diagnostic\xpnetdiag.exe
O9 - Extra 'Tools' menuitem: @xpsp3res.dll,-20001 - {e2e2dd38-d088-4134-82b7-f2ba38496583} - C:\WINDOWS\Network Diagnostic\xpnetdiag.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
O16 - DPF: {74DBCB52-F298-4110-951D-AD2FF67BC8AB} (NVIDIA Smart Scan) - http://www.nvidia.com/content/DriverDownload/nforce/NvidiaSmartScan.cab
O16 - DPF: {D27CDB6E-AE6D-11CF-96B8-444553540000} (Shockwave Flash Object) - http://fpdownload2.macromedia.com/get/shockwave/cabs/flash/swflash.cab
O16 - DPF: {E2883E8F-472F-4FB0-9522-AC9BF37916A7} - http://platformdl.adobe.com/NOS/getPlusPlus/1.6/gp.cab
O22 - SharedTaskScheduler: Precaricatore Browseui - {438755C2-A8BA-11D1-B96B-00A0C90312E1} - C:\WINDOWS\system32\browseui.dll
O22 - SharedTaskScheduler: Daemon di cache delle categorie di componenti - {8C7461EF-2B13-11d2-BE35-3078302C2030} - C:\WINDOWS\system32\browseui.dll
O23 - Service: Servizio Acronis Scheduler2 (AcrSch2Svc) - Acronis - C:\Programmi\File comuni\Acronis\Schedule2\schedul2.exe
O23 - Service: Atheros Configuration Service (ACS) - Atheros - C:\WINDOWS\system32\acs.exe
O23 - Service: Adobe Flash Player Update Service (AdobeFlashPlayerUpdateSvc) - Adobe Systems Incorporated - C:\WINDOWS\system32\Macromed\Flash\FlashPlayerUpdateService.exe
O23 - Service: Advanced SystemCare Service 6 (AdvancedSystemCareService6) - IObit - C:\Programmi\IObit\Advanced SystemCare 6\ASCService.exe
O23 - Service: Acronis Nonstop Backup service (afcdpsrv) - Acronis - C:\Programmi\File comuni\Acronis\CDP\afcdpsrv.exe
O23 - Service: Ati HotKey Poller - ATI Technologies Inc. - C:\WINDOWS\system32\Ati2evxx.exe
O23 - Service: avast! Antivirus - AVAST Software - C:\Programmi\Alwil Software\Avast5\AvastSvc.exe
O23 - Service: Servizio Google Update (gupdate) (gupdate) - Google Inc. - C:\Programmi\Google\Update\GoogleUpdate.exe
O23 - Service: Servizio Google Update (gupdatem) (gupdatem) - Google Inc. - C:\Programmi\Google\Update\GoogleUpdate.exe
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - C:\Programmi\File comuni\InstallShield\Driver\11\Intel 32\IDriverT.exe
O23 - Service: Java Quick Starter (JavaQuickStarterService) - Oracle Corporation - C:\Programmi\Java\jre7\bin\jqs.exe
O23 - Service: MBAMScheduler - Malwarebytes Corporation - C:\Programmi\Malwarebytes' Anti-Malware\mbamscheduler.exe
O23 - Service: MBAMService - Malwarebytes Corporation - C:\Programmi\Malwarebytes' Anti-Malware\mbamservice.exe
O23 - Service: NVIDIA Performance Driver Service - Unknown owner - C:\Programmi\NVIDIA Corporation\Performance Drivers\nvPDsvc.exe
O23 - Service: NVIDIA Driver Helper Service (NVSvc) - NVIDIA Corporation - C:\WINDOWS\system32\nvsvc32.exe
O23 - Service: NVIDIA Update Service Daemon (nvUpdatusService) - NVIDIA Corporation - C:\Programmi\NVIDIA Corporation\NVIDIA Update Core\daemonu.exe
O23 - Service: PDAgent - Raxco Software, Inc. - C:\Programmi\Raxco\PerfectDisk10\PDAgent.exe
O23 - Service: PDEngine - Raxco Software, Inc. - C:\Programmi\Raxco\PerfectDisk10\PDEngine.exe

--
End of file - 7870 bytes

Il log è a posto, di chrome non c'è traccia, la lentezza nell'apertura programmi potrebbe dipendere dal disco frammentato, prova a deframmentarlo, non usare il defrag di windows, prova QUESTO.

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:

O4 - HKLM\..\Run: [UpdReg] C:\WINDOWS\UpdReg.EXE
O4 - HKLM\..\Run: [H2O] c:\programmi\syncrosoft\pos\h2o\cledx.exe
O4 - HKLM\..\Run: [NvMediaCenter] RunDLL32.exe NvMCTray.dll,NvTaskbarInit -login
O4 - HKUS\S-1-5-21-220523388-329068152-839522115-1005\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\CTFMON.EXE (User 'UpdatusUser')

Poi fai questa scansione:
Scarica Adwcleaner sul desktop:
http://general-changelog-team.fr/en/downloads/finish/20-outils-de-xplode/2-adwcleaner
Avvialo e clicca sul pulsante "Elimina", non cliccare su Cerca.
Conferma con OK le varie finestre che ti compariranno.
Il pc si riavvierà, e uscirà il log con le eliminazioni.
Postalo qui.

Ciao.