Meu pc pirou de vez, nao desliga.....


n desliga normalmente pelo menu iniciar;(n acontece nada ao clic )

n desliga pelo gerenciador de tarefas;
n desliga pelo comando shutdown ( este so funcionou 1 vez)
....
so desliga pelo estabilizador ou
segurando o botao power ou ainda se
coloco no modo de espera e qdo faço isso e clico em desligar surge uma mensagem:
"outras pessoas estao conectadas ao computador.Se vc desligar o windows elas podem perder dados. Deseja continuar ?"
digo sim e ele desliga.....
.....
ja usei antivus e n encontra nada ;
ja olhei conf. de fonte de energia e esta em casa escritorio -desligar- ACPI UniprocessorPC
uso o CCleaner;
ja fiz tantas verificaçoes e nada Afffffff........
......
no gerenciador de tarefas tem uns processos suspeitos um tal de ;

svchost.exe (tem uns 5 desse rodando)
csrss.exe
isass.exe (esse não consigo finalizar, pq aparece uma mensagem dizendo que é processo de sistema crítico )


tenho o karpersky e o ComboFix baixados no pc prontos para batalha

Usei o HijackThis para gerar umlog q é este :
Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 11:22:20, on 2/7/2009
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.0\System32\smss.exe
C:\WINDOWS.0\system32\winlogon.exe
C:\WINDOWS.0\system32\services.exe
C:\WINDOWS.0\system32\lsass.exe
C:\WINDOWS.0\system32\svchost.exe
C:\WINDOWS.0\System32\svchost.exe
C:\WINDOWS.0\system32\spoolsv.exe
C:\WINDOWS.0\system32\cmpe.exe
C:\WINDOWS.0\system32\wscntfy.exe
C:\WINDOWS.0\Explorer.EXE
C:\Arquivos de programas\Java\jre1.5.0_05\bin\jusched.exe
C:\Arquivos de programas\Oi Velox\Manager\desp2k.exe
C:\WINDOWS.0\gbiesrv.exe
C:\ARQUIV~1\WI1F86~1\MESSEN~1\msnmsgr.exe
C:\WINDOWS.0\system32\ctfmon.exe
C:\Arquivos de programas\Internet Explorer\iexplore.exe
C:\Arquivos de programas\Windows Live\Messenger\usnsvc.exe
C:\Documents and Settings\Administrador.PATRICIA-BFBCAD\Meus documentos\Hijackthis\HijackThis.exe
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://br.yahoo.com/?fr=fp-yie8
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = http://www.yahoo.com/search/ie.html
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://br.yahoo.com/?fr=fp-yie8
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://www.compartilhando.org/
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant =
R1 - HKCU\Software\Microsoft\Internet Connection Wizard,ShellNext = http://www.compartilhando.org/
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Window Title = Windows Internet Explorer fornecido por Yahoo!
R3 - URLSearchHook: Barra de Ferramentas do Yahoo! - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\Arquivos de programas\Yahoo!\Companion\Installs\cpn1\yt.dll
O2 - BHO: &Yahoo! Toolbar Helper - {02478D38-C3F9-4efb-9B51-7695ECA05670} - C:\Arquivos de programas\Yahoo!\Companion\Installs\cpn1\yt.dll
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Arquivos de programas\Adobe\Acrobat 7.0\ActiveX\AcroIEHelper.dll
O2 - BHO: ShoppingReport - {100EB1FD-D03E-47FD-81F3-EE91287F9465} - C:\Arquivos de programas\ShoppingReport\Bin\2.5.0\ShoppingReport.dll
O2 - BHO: (no name) - {7E853D72-626A-48EC-A868-BA8D5E23E045} - (no file)
O2 - BHO: Auxiliar de Conexão do Windows Live - {9030D464-4C02-4ABF-8ECC-5164760863C6} - C:\Arquivos de programas\Arquivos comuns\Microsoft Shared\Windows Live\WindowsLiveLogin.dll
O2 - BHO: SingleInstance Class - {FDAD4DA1-61A2-4FD8-9C17-86F7AC245081} - C:\Arquivos de programas\Yahoo!\Companion\Installs\cpn1\YTSingleInstance.dll
O3 - Toolbar: Barra de Ferramentas do Yahoo! - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\Arquivos de programas\Yahoo!\Companion\Installs\cpn1\yt.dll
O4 - HKLM\..\Run: [SunJavaUpdateSched] C:\Arquivos de programas\Java\jre1.5.0_05\bin\jusched.exe
O4 - HKLM\..\Run: [desp2k] C:\Arquivos de programas\Oi Velox\Manager\desp2k.exe
O4 - HKLM\..\Run: [gbiesrv] C:\WINDOWS.0\gbiesrv.exe
O4 - HKLM\..\Run: [MSConfig] C:\WINDOWS.0\pchealth\helpctr\Binaries\MSCONFIG.EXE /auto
O4 - HKCU\..\Run: [MsnMsgr] "C:\ARQUIV~1\WI1F86~1\MESSEN~1\msnmsgr.exe" /background
O4 - HKCU\..\Run: [CTFMON.EXE] C:\WINDOWS.0\system32\ctfmon.exe
O4 - HKUS\S-1-5-18\..\Run: [CTFMON.EXE] C:\WINDOWS.0\system32\CTFMON.EXE (User 'SYSTEM')
O4 - HKUS\S-1-5-18\..\Run: [MsnMsgr] "C:\Arquivos de programas\MSN Messenger\MsnMsgr.Exe" /background (User 'SYSTEM')
O4 - HKUS\S-1-5-18\..\RunOnce: [nlsf] cmd.exe /C move /Y "%SystemRoot%\System32\syssetub.dll" "%SystemRoot%\System32\syssetup.dll" (User 'SYSTEM')
O4 - HKUS\.DEFAULT\..\Run: [CTFMON.EXE] C:\WINDOWS.0\system32\CTFMON.EXE (User 'Default user')
O4 - HKUS\.DEFAULT\..\RunOnce: [nlsf] cmd.exe /C move /Y "%SystemRoot%\System32\syssetub.dll" "%SystemRoot%\System32\syssetup.dll" (User 'Default user')
O4 - Global Startup: Adobe Reader Speed Launch.lnk = C:\Arquivos de programas\Adobe\Acrobat 7.0\Reader\reader_sl.exe
O8 - Extra context menu item: E&xportar para o Microsoft Excel - res://C:\ARQUIV~1\MICROS~2\OFFICE11\EXCEL.EXE/3000
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Arquivos de programas\Java\jre1.5.0_05\bin\npjpi150_05.dll
O9 - Extra 'Tools' menuitem: Sun Java Console - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Arquivos de programas\Java\jre1.5.0_05\bin\npjpi150_05.dll
O9 - Extra button: Pesquisar - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\ARQUIV~1\MICROS~2\OFFICE11\REFIEBAR.DLL
O9 - Extra button: ShopperReports - Compare product prices - {C5428486-50A0-4a02-9D20-520B59A9F9B2} - C:\Arquivos de programas\ShoppingReport\Bin\2.5.0\ShoppingReport.dll
O9 - Extra button: ShopperReports - Compare travel rates - {C5428486-50A0-4a02-9D20-520B59A9F9B3} - C:\Arquivos de programas\ShoppingReport\Bin\2.5.0\ShoppingReport.dll
O14 - IERESET.INF: SEARCH_PAGE_URL=&http://home.microsof...ss/allinone.asp
O14 - IERESET.INF: START_PAGE_URL=http://www.compartilhando.org/
O16 - DPF: {4F1E5B1A-2A80-42CA-8532-2D05CB959537} (MSN Photo Upload Tool) - http://gfx2.hotmail....es/MSNPUpld.cab
O16 - DPF: {6414512B-B978-451D-A0D8-FCFDF33E833C} (WUWebControl Class) - http://update.micros...b?1239652901718
O17 - HKLM\System\CCS\Services\Tcpip\..\{A219B47F-70C5-41A6-B030-4E50FFE80BB1}: NameServer = 200.165.132.154 200.165.132.148
O23 - Service: Context Manager Process Extension (cmpe) - LightComm - C:\WINDOWS.0\system32\cmpe.exe
--
End of file - 5599 bytes
Desde ja agradeço !
