[Arquivado] gerenciador de tarefas fechando sozinho

ja vi varios forum e topicos com esse problema mas nenhum me ajudo, ja baixei alguns antiviru e antispyware e continuo com o mesmo problema, ja tentei mexer no regedit e nada, alguem poderia me ajudar?

log

Logfile of HijackThis v1.99.1
Scan saved at 19:39:47, on 18/01/2015
Platform: Unknown Windows (WinNT 6.02.1008)
MSIE: Internet Explorer v11.0 (11.00.9600.17239)

Running processes:
C:\Program Files (x86)\AVG\AVG2015\avgui.exe
C:\Windows\SysWOW64\ctfmon.exe
C:\HijackThis\HijackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://istart.webssearches.com/?type=hp&ts=1421531760&from=key7&uid=ST500DM002-1BD142_S2AG4KAJXXXXS2AG4KAJ

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 = www.google.com
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://istart.webssearches.com/?type=hp&ts=1421531760&from=key7&uid=ST500DM002-1BD142_S2AG4KAJXXXXS2AG4KAJ

R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = http://istart.webssearches.com/web/?type=ds&ts=1421531760&from=key7&uid=ST500DM002-1BD142_S2AG4KAJXXXXS2AG4KAJ&q={searchTerms}

R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = http://istart.webssearches.com/web/?type=ds&ts=1421531760&from=key7&uid=ST500DM002-1BD142_S2AG4KAJXXXXS2AG4KAJ&q={searchTerms}

R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://istart.webssearches.com/?type=hp&ts=1421531760&from=key7&uid=ST500DM002-1BD142_S2AG4KAJXXXXS2AG4KAJ

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: Java Plug-In SSV Helper - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Program Files (x86)\Java\jre7\bin\ssv.dll
O2 - BHO: ArcPluginIEBHO - {84BFE29A-8139-402a-B2A4-C23AE9E1A75F} - C:\Program Files (x86)\Perfect World Entertainment\Arc\Plugins\ArcPluginIE.dll
O2 - BHO: AVG Web TuneUp - {95B7759C-8C7F-4BF1-B163-73684A933233} - C:\Program Files (x86)\AVG Web TuneUp\4.0.5.7\AVG Web TuneUp.dll
O2 - BHO: Advanced SystemCare Surfing Protection - {BA0C978D-D909-49B6-AFE2-8BDE245DC7E6} - C:\PROGRA~2\IObit\SURFIN~1\BROWER~1\ASCPLU~1.DLL
O2 - BHO: Microsoft SkyDrive Pro Browser Helper - {D0498E0A-45B7-42AE-A9AA-ABA463DBD3BF} - C:\PROGRA~2\MICROS~1\Office15\GROOVEEX.DLL
O2 - BHO: Java Plug-In 2 SSV Helper - {DBC80044-A445-435b-BC74-9C25C1C588A9} - C:\Program Files (x86)\Java\jre7\bin\jp2ssv.dll
O4 - HKLM\..\Run: [Adobe ARM] "C:\Program Files (x86)\Common Files\Adobe\ARM\1.0\AdobeARM.exe"
O4 - HKLM\..\Run: [AVG_UI] "C:\Program Files (x86)\AVG\AVG2015\avgui.exe" /TRAYONLY
O4 - HKLM\..\Run: [startCCC] "C:\Program Files (x86)\ATI Technologies\ATI.ACE\Core-Static\amd64\CLIStart.exe" MSRun
O4 - HKCU\..\Run: [Advanced SystemCare 8] "C:\Program Files (x86)\IObit\Advanced SystemCare 8\ASCTray.exe" /Auto
O4 - HKCU\..\Run: [XFastUSB] "C:\Program Files (x86)\XFastUSB\XFastUsb.exe"
O10 - Unknown file in Winsock LSP: c:\windows\system32\napinsp.dll
O10 - Unknown file in Winsock LSP: c:\windows\system32\nlaapi.dll
O11 - Options group: [ACCELERATED_GRAPHICS] Accelerated graphics
O11 - Options group: [iNTERNATIONAL] International
O13 - Gopher Prefix:
O18 - Protocol: ms-help - {314111C7-A502-11D2-BBCA-00C04F8EC294} - (no file)
O18 - Protocol: osf - {D924BDC6-C83A-4BD5-90D0-095128A113D1} - C:\Program Files (x86)\Microsoft Office\Office15\MSOSB.DLL
O18 - Protocol: skype4com - {FFC8B962-9B40-4DFF-9458-1830C7DD7F5D} - C:\PROGRA~2\COMMON~1\Skype\SKYPE4~1.DLL
O18 - Protocol: viprotocol - {B658800C-F66E-4EF3-AB85-6C0C227862A9} - C:\Program Files (x86)\Common Files\AVG Secure Search\ViProtocolInstaller\18.2.0\ViProtocol.dll
O18 - Filter hijack: text/xml - {807583E5-5146-11D5-A672-00B0D022E945} - C:\Program Files (x86)\Common Files\Microsoft Shared\OFFICE15\MSOXMLMF.DLL

O23 - Service: Adobe Acrobat Update Service (AdobeARMservice) - Adobe Systems Incorporated - C:\Program Files (x86)\Common Files\Adobe\ARM\1.0\armsvc.exe
O23 - Service: Adobe Flash Player Update Service (AdobeFlashPlayerUpdateSvc) - Adobe Systems Incorporated - C:\Windows\SysWOW64\Macromed\Flash\FlashPlayerUpdateService.exe

O23 - Service: Advanced SystemCare Service 8 (AdvancedSystemCareService8) - IObit - C:\Program Files (x86)\IObit\Advanced SystemCare 8\ASCService.exe
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: AMD FUEL Service - Advanced Micro Devices, Inc. - C:\Program Files\ATI Technologies\ATI.ACE\Fuel\Fuel.Service.exe
O23 - Service: AVGIDSAgent - AVG Technologies CZ, s.r.o. - C:\Program Files (x86)\AVG\AVG2015\avgidsagent.exe
O23 - Service: Watchdog do AVG (avgwd) - AVG Technologies CZ, s.r.o. - C:\Program Files (x86)\AVG\AVG2015\avgwdsvc.exe
O23 - Service: @%SystemRoot%\system32\efssvc.dll,-100 (EFS) - Unknown owner - C:\Windows\System32\lsass.exe (file missing)
O23 - Service: @%systemroot%\system32\fxsresm.dll,-118 (Fax) - Unknown owner - C:\Windows\system32\fxssvc.exe (file missing)

O23 - Service: Serviço do Google Update (gupdate) (gupdate) - Unknown owner - C:\Program Files (x86)\Google\Update\GoogleUpdate.exe" /svc (file missing)
O23 - Service: Serviço do Google Update (gupdatem) (gupdatem) - Unknown owner - C:\Program Files (x86)\Google\Update\GoogleUpdate.exe" /medsvc (file missing)

O23 - Service: @%SystemRoot%\system32\ieetwcollectorres.dll,-1000 (IEEtwCollectorService) - Unknown owner - C:\Windows\system32\IEEtwCollector.exe (file missing)
O23 - Service: IMF Service (IMFservice) - IObit - C:\Program Files (x86)\IObit\IObit Malware Fighter\IMFsrv.exe
O23 - Service: @keyiso.dll,-100 (KeyIso) - Unknown owner - C:\Windows\system32\lsass.exe (file missing)
O23 - Service: LiveUpdate (LiveUpdateSvc) - IObit - C:\Program Files (x86)\IObit\LiveUpdate\LiveUpdate.exe
O23 - Service: @comres.dll,-2797 (MSDTC) - Unknown owner - C:\Windows\System32\msdtc.exe (file missing)
O23 - Service: @%SystemRoot%\system32\qwave.dll,-1 (QWAVE) - Unknown owner - %windir%\system32\svchost.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\seclogon.dll,-7001 (seclogon) - Unknown owner - %windir%\system32\svchost.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: Stardock Start8 (Start8) - Stardock Software, Inc - C:\Program Files (x86)\Stardock\Start8\Start8Srv.exe
O23 - Service: @%SystemRoot%\system32\ui0detect.exe,-101 (UI0Detect) - Unknown owner - C:\Windows\system32\UI0Detect.exe (file missing)
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: vToolbarUpdater18.2.0 - AVG Secure Search - C:\Program Files (x86)\Common Files\AVG Secure Search\vToolbarUpdater\18.2.0\ToolbarUpdater.exe
O23 - Service: @%systemroot%\system32\wbengine.exe,-104 (wbengine) - Unknown owner - C:\Windows\system32\wbengine.exe (file missing)
O23 - Service: @%ProgramFiles%\Windows Defender\MpAsDesc.dll,-320 (WdNisSvc) - Unknown owner - %ProgramFiles%\Windows Defender\NisSrv.exe (file missing)
O23 - Service: @%ProgramFiles%\Windows Defender\MpAsDesc.dll,-310 (WinDefend) - Unknown owner - %ProgramFiles%\Windows Defender\MsMpEng.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 - %PROGRAMFILES%\Windows Media Player\wmpnetwk.exe (file missing)