portatile rallenta e si blocca

[Franco!]

ciao a tutti! Spero di aver azzeccato la sezione giusta. Da circa una setimana il mio portatile sta rincoglio... otto volte su dieci all'avvio rallenta in maniera paurosa, arriva a windows con notevole lentezza e la tastiera e il mouse hanno una velocità di reazione di circa 5 secondi da quando li premo. Il pc diventa inutilizzabille e dopo qualche minuto si blocca.
Ho notato che quando il portatile rallenta, se stacco la spina dell'alimentazione, quando la batteria si sta per esaurire e mi appare l'avviso "ricaricare o cambiare batteria" il pc magicamente si sblocca e torna a funzionare perfettamente. Spero di essere stato chiaro. Premetto che in materia informatica sono un ignorante.

Il mio portatile è :
Acer aspire 1642 wlmi
intel pentium 735 processor (1,7 ghz, 400 mhz fsb, 2 mb L2 cache)
60 gb hd
512mb ddr2

Come antivirus primo utilizzavo avast e come firewall zonealarm nell'ultimo settiamana ho tolto zonealarm e ho messo AVG free

Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 16.09.50, on 05/05/2008
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP2 (6.00.2900.2180)
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:\WINDOWS\system32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\Programmi\Intel\Wireless\Bin\EvtEng.exe
C:\WINDOWS\Explorer.EXE
C:\Programmi\Intel\Wireless\Bin\S24EvMon.exe
C:\WINDOWS\system32\ZONELABS\vsmon.exe
C:\WINDOWS\system32\spoolsv.exe
C:\a-squared Free\a2service.exe
C:\Acer\eManager\anbmServ.exe
C:\PROGRA~1\AVG\AVG8\avgwdsvc.exe
C:\Programmi\Acer\Acer Arcade\Kernel\TV\CLCapSvc.exe
C:\Programmi\Acer\Acer Arcade\Kernel\CLML_NTService\CLMLServer.exe
C:\Programmi\Acer\Acer Arcade\Kernel\CLML_NTService\CLMLService.exe
C:\Programmi\Google\Common\Google Updater\GoogleUpdaterService.exe
C:\Programmi\Intel\Wireless\Bin\RegSrvc.exe
C:\Programmi\CyberLink\Shared Files\RichVideo.exe
C:\PROGRA~1\AVG\AVG8\avgrsx.exe
C:\Programmi\Acer\Acer Arcade\Kernel\TV\CLSched.exe
C:\Programmi\Synaptics\SynTP\SynTPLpr.exe
C:\Acer\Empowering Technology\eRecovery\Monitor.exe
C:\Programmi\Synaptics\SynTP\SynTPEnh.exe
C:\WINDOWS\RTHDCPL.EXE
C:\Programmi\Acer\Acer Arcade\PCMService.exe
C:\WINDOWS\system32\igfxtray.exe
C:\WINDOWS\system32\hkcmd.exe
C:\WINDOWS\system32\igfxpers.exe
C:\acer\epm\epm-dm.exe
C:\PROGRA~1\LAUNCH~1\QtZgAcer.EXE
C:\PROGRA~1\AVG\AVG8\avgtray.exe
C:\WINDOWS\system32\ctfmon.exe
C:\Programmi\Google\GoogleToolbarNotifier\GoogleToolbarNotifier.exe
C:\Programmi\Windows Live\Messenger\msnmsgr.exe
C:\Programmi\Google\Google Updater\GoogleUpdater.exe
C:\Documents and Settings\Laura Oddo\Desktop\HiJackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.libero.it/
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://global.acer.com
R1 - HKCU\Software\Microsoft\Internet Connection Wizard,ShellNext = "C:\Programmi\Outlook Express\msimn.exe"
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Collegamenti
R3 - Default URLSearchHook is missing
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - c:\Programmi\Adobe\Acrobat 7.0\ActiveX\AcroIEHelper.dll
O2 - BHO: Class - {346D8699-DAC7-DD78-5CD4-CA50A929983C} - (no file)
O2 - BHO: NAV Helper - {BDF3E430-B101-42AD-A544-FADC6B084872} - (no file)
O3 - Toolbar: (no name) - {42CDD1BF-3FFB-4238-8AD1-7859DF00B1D6} - (no file)
O3 - Toolbar: &Google - {2318C2B1-4965-11d4-9B18-009027A5CD4F} - c:\programmi\google\googletoolbar2.dll
O3 - Toolbar: Windows Live Toolbar - {BDAD1DAD-C946-4A17-ADC1-64B5B4FF55D0} - C:\Programmi\Windows Live Toolbar\msntb.dll
O3 - Toolbar: AVG Security Toolbar - {A057A204-BACC-4D26-9990-79A187E2698E} - C:\Programmi\AVG\AVG8\avgtoolbar.dll
O4 - HKLM\..\Run: [LaunchApp] Alaunch
O4 - HKLM\..\Run: [High Definition Audio Property Page Shortcut] HDAShCut.exe
O4 - HKLM\..\Run: [AzMixerSel] C:\Programmi\Realtek\InstallShield\AzMixerSel.exe
O4 - HKLM\..\Run: [SynTPLpr] C:\Programmi\Synaptics\SynTP\SynTPLpr.exe
O4 - HKLM\..\Run: [SynTPEnh] C:\Programmi\Synaptics\SynTP\SynTPEnh.exe
O4 - HKLM\..\Run: [IMJPMIG8.1] "C:\WINDOWS\IME\imjp8_1\IMJPMIG.EXE" /Spoil /RemAdvDef /Migration32
O4 - HKLM\..\Run: [MSPY2002] C:\WINDOWS\system32\IME\PINTLGNT\ImScInst.exe /SYNC
O4 - HKLM\..\Run: [PHIME2002ASync] C:\WINDOWS\system32\IME\TINTLGNT\TINTSETP.EXE /SYNC
O4 - HKLM\..\Run: [PHIME2002A] C:\WINDOWS\system32\IME\TINTLGNT\TINTSETP.EXE /IMEName
O4 - HKLM\..\Run: [RTHDCPL] RTHDCPL.EXE
O4 - HKLM\..\Run: [PCMService] "C:\Programmi\Acer\Acer Arcade\PCMService.exe"
O4 - HKLM\..\Run: [igfxtray] C:\WINDOWS\system32\igfxtray.exe
O4 - HKLM\..\Run: [igfxhkcmd] C:\WINDOWS\system32\hkcmd.exe
O4 - HKLM\..\Run: [igfxpers] C:\WINDOWS\system32\igfxpers.exe
O4 - HKLM\..\Run: [EPM-DM] c:\acer\epm\epm-dm.exe
O4 - HKLM\..\Run: [ePowerManagement] C:\Acer\ePM\ePM.exe boot
O4 - HKLM\..\Run: [LManager] C:\PROGRA~1\LAUNCH~1\QtZgAcer.EXE
O4 - HKLM\..\Run: [eRecoveryService] C:\Acer\Empowering Technology\eRecovery\Monitor.exe
O4 - HKLM\..\Run: [MSConfig] C:\WINDOWS\PCHealth\HelpCtr\Binaries\MSConfig.exe /auto
O4 - HKLM\..\Run: [AVG8_TRAY] C:\PROGRA~1\AVG\AVG8\avgtray.exe
O4 - HKCU\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [swg] C:\Programmi\Google\GoogleToolbarNotifier\GoogleToolbarNotifier.exe
O4 - HKCU\..\Run: [msnmsgr] "C:\Programmi\Windows Live\Messenger\msnmsgr.exe" /background
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-1-5-18\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\CTFMON.EXE (User 'SYSTEM')
O4 - HKUS\.DEFAULT\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\CTFMON.EXE (User 'Default user')
O4 - Global Startup: Google Updater.lnk = C:\Programmi\Google\Google Updater\GoogleUpdater.exe
O8 - Extra context menu item: E&sporta in Microsoft Excel - res://C:\PROGRA~1\MICROS~3\OFFICE11\EXCEL.EXE/3000
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Programmi\Java\jre1.6.0_03\bin\ssv.dll
O9 - Extra 'Tools' menuitem: Sun Java Console - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Programmi\Java\jre1.6.0_03\bin\ssv.dll
O9 - Extra button: Inserisci blog - {219C3416-8CB2-491a-A3C7-D9FCDDC9D600} - C:\Programmi\Windows Live\Writer\WriterBrowserExtension.dll
O9 - Extra 'Tools' menuitem: Inserisci &blog in Windows Live Writer - {219C3416-8CB2-491a-A3C7-D9FCDDC9D600} - C:\Programmi\Windows Live\Writer\WriterBrowserExtension.dll
O9 - Extra button: Ricerche - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~3\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
O18 - Protocol: linkscanner - {F274614C-63F8-47D5-A4D1-FBDDE494F8D1} - C:\Programmi\AVG\AVG8\avgpp.dll
O20 - AppInit_DLLs: \\?\C:\WINDOWS\system32\com1.ugn,avgrsstx.dll
O23 - Service: a-squared Free Service (a2free) - Emsi Software GmbH - C:\a-squared Free\a2service.exe
O23 - Service: Notebook Manager Service (anbmService) - OSA Technologies Inc. - C:\Acer\eManager\anbmServ.exe
O23 - Service: AVG8 WatchDog (avg8wd) - AVG Technologies CZ, s.r.o. - C:\PROGRA~1\AVG\AVG8\avgwdsvc.exe
O23 - Service: CyberLink Background Capture Service (CBCS) (CLCapSvc) - Unknown owner - C:\Programmi\Acer\Acer Arcade\Kernel\TV\CLCapSvc.exe
O23 - Service: CyberLink Task Scheduler (CTS) (CLSched) - Unknown owner - C:\Programmi\Acer\Acer Arcade\Kernel\TV\CLSched.exe
O23 - Service: CyberLink Media Library Service - Cyberlink - C:\Programmi\Acer\Acer Arcade\Kernel\CLML_NTService\CLMLServer.exe
O23 - Service: EvtEng - Intel Corporation - C:\Programmi\Intel\Wireless\Bin\EvtEng.exe
O23 - Service: Google Updater Service (gusvc) - Google - C:\Programmi\Google\Common\Google Updater\GoogleUpdaterService.exe
O23 - Service: RegSrvc - Intel Corporation - C:\Programmi\Intel\Wireless\Bin\RegSrvc.exe
O23 - Service: Cyberlink RichVideo Service(CRVS) (RichVideo) - Unknown owner - C:\Programmi\CyberLink\Shared Files\RichVideo.exe
O23 - Service: Remote Packet Capture Protocol v.0 (experimental) (rpcapd) - Unknown owner - C:\Programmi\WinPcap\rpcapd.exe
O23 - Service: Spectrum24 Event Monitor (S24EventMonitor) - Intel Corporation - C:\Programmi\Intel\Wireless\Bin\S24EvMon.exe
O23 - Service: SAVScan - Unknown owner - C:\Programmi\Norton AntiVirus\SAVScan.exe (file missing)
O23 - Service: TrueVector Internet Monitor (vsmon) - Zone Labs, LLC - C:\WINDOWS\system32\ZONELABS\vsmon.exe

--
End of file - 7900 bytes

[!fazz]

O23 - Service: SAVScan - Unknown owner - C:\Programmi\Norton AntiVirus\SAVScan.exe (file missing)
non hai norton ma hai un processo di norton, potrebbe essere un conflitto tra gli av,

[Franco!]

Originariamente inviato da !fazz

O23 - Service: SAVScan - Unknown owner - C:\Programmi\Norton AntiVirus\SAVScan.exe (file missing)
non hai norton ma hai un processo di norton, potrebbe essere un conflitto tra gli av,

il norton era l'antivirus che era installato quando ho comprato il portatile. provo a cancellarlo

[Franco!]

Originariamente inviato da !fazz

O23 - Service: SAVScan - Unknown owner - C:\Programmi\Norton AntiVirus\SAVScan.exe (file missing)
non hai norton ma hai un processo di norton, potrebbe essere un conflitto tra gli av,

Ho cancellato il file norton con hijackthis ma non è cambiato nulla. Altri suggerimenti ?

[!fazz]

bah non so, per stare sul sicuro dagli una formattata, installi il sistema operativo puro, senza la caterva di sw preinstallati, poi installi i driver e le utility e alla fine un antivirus.

In questi casi un bel repulisti è meglio