[Arquivado] PC com sintomas 'estranhos' - Lerdeza, freeze

Boa noite,

Tenho uma máquina com Windows 7 ultimate 64bits, processador Intel Core I3 2120, GPU Nvidia GeForce GT430, 4gb de RAM DDR3, placa mãe Gigabyte H61M-S1

Há um mes mais ou menos eu percebi que quando ligava o pc, na hora de ele iniciar, ele ligava o gabinete, logo em seguida desligava, passava 2~3s e então ele ligava de vez, fiquei meio preocupado, dei uma garimpada na internet e achei gente falando que isso era 'normal' e que não deveria me preocupar. Essa semana eu percebi que quando eu reinicio a máquina, tanto pelo gabinete, quanto pelo windows, a máquina trava no logo da bios, ela nao faz o boot completo e fica travada na bios eternamente. Ontem surgiu outro 'sintoma' que me preocupou mais; eu percebi que o computador andava muito lento ultimamente, e de uma hora para a outra. Parece que quanto mais tempo ele fica ligado, mais lento ele fica. Os navegadores travam e param de funcionar, o shockwave crasha, pra abrir pastas/arquivos as vezes chega a demorar 2 minutos, até o gerenciador de tarefas demora minutos para aparecer na tela, porém, nem o uso de RAM nem o da CPU ultrapassa os 40%~

Já realizei os testes de RAM e de disco rígido do windows, ambos não apresentaram nada 'errado'. Já rodei scan do Panda Antivirus, MalwareByts, Super AntiSpyware e do AdwareCleaner, todos terminaram a varredura com 0 ameaças. Também já realizei uma análise com o HijackThis que estarei colocando aqui em baixo.

Também já chequei a temperatura e voltagem de todos os componentes com o programa HWMonitor, e segundo ele, está tudo dentro do esperado. Os coolers também estão em funcionamento normal.

Mainboard: 47ºC
Processador: 50~58ºC (varia muito e muito rápido)
GPU: 32ºC

Qualquer ajuda é extremamente bem-vinda, não faço mais ideia de o que fazer/tentar. hahaha

Muito obrigado desde já!

Logfile of Trend Micro HijackThis v2.0.4
Scan saved at 21:02:28, on 16/09/2015
Platform: Windows 7 SP1 (WinNT 6.00.3505)
MSIE: Internet Explorer v9.00 (9.00.8112.16457)
Boot mode: Normal

Running processes:
C:\Program Files (x86)\NVIDIA Corporation\Update Core\NvBackend.exe
C:\Program Files (x86)\Panda Security\Panda Security Protection\PSUAMain.exe
C:\Program Files (x86)\Mozilla Firefox\firefox.exe
C:\Program Files (x86)\Mozilla Firefox\plugin-container.exe
C:\Windows\SysWOW64\Macromed\Flash\FlashPlayerPlugin_18_0_0_232.exe
C:\Windows\SysWOW64\Macromed\Flash\FlashPlayerPlugin_18_0_0_232.exe
C:\Program Files (x86)\Common Files\Adobe\ARM\1.0\AdobeARM.exe
C:\Users\Usuário\Downloads\HijackThis.exe
C:\Windows\SysWOW64\DllHost.exe

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: Groove GFS Browser Helper - {72853161-30C5-4D22-B7F9-0BBC1D38A37E} - C:\Program Files (x86)\Microsoft Office\Office12\GrooveShellExtensions.dll
O2 - BHO: Java Plug-In SSV Helper - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Program Files (x86)\Java\jre1.8.0_45\bin\ssv.dll
O2 - BHO: Auxiliar de Conexão de Conta da Microsoft - {9030D464-4C02-4ABF-8ECC-5164760863C6} - C:\Program Files (x86)\Common Files\Microsoft Shared\Windows Live\WindowsLiveLogin.dll
O2 - BHO: Java Plug-In 2 SSV Helper - {DBC80044-A445-435b-BC74-9C25C1C588A9} - C:\Program Files (x86)\Java\jre1.8.0_45\bin\jp2ssv.dll
O4 - HKLM\..\Run: [GrooveMonitor] "C:\Program Files (x86)\Microsoft Office\Office12\GrooveMonitor.exe"
O4 - HKLM\..\Run: [sidebar] "C:\Program Files (x86)\Windows Sidebar\sidebar.exe" /autoRun
O4 - HKLM\..\Run: [PSUAMain] "C:\Program Files (x86)\Panda Security\Panda Security Protection\PSUAMain.exe" /LaunchSysTray
O4 - HKLM\..\Run: [LogMeIn Hamachi Ui] "C:\Program Files (x86)\LogMeIn Hamachi\hamachi-2-ui.exe" --auto-start
O4 - HKCU\..\Run: [Facebook Update] "C:\Users\Usuário\AppData\Local\Facebook\Update\FacebookUpdate.exe" /c /nocrashserver
O4 - HKCU\..\Run: [DAEMON Tools Lite] "C:\Program Files (x86)\DAEMON Tools Lite\DTLite.exe" -autorun
O4 - HKCU\..\Run: [sidebar] C:\Program Files\Windows Sidebar\sidebar.exe /autoRun
O4 - HKUS\S-1-5-19\..\Run: [sidebar] %ProgramFiles%\Windows Sidebar\Sidebar.exe /autoRun (User 'SERVIÇO LOCAL')
O4 - HKUS\S-1-5-19\..\RunOnce: [mctadmin] C:\Windows\System32\mctadmin.exe (User 'SERVIÇO LOCAL')
O4 - HKUS\S-1-5-20\..\Run: [sidebar] %ProgramFiles%\Windows Sidebar\Sidebar.exe /autoRun (User 'SERVIÇO DE REDE')
O4 - HKUS\S-1-5-20\..\RunOnce: [mctadmin] C:\Windows\System32\mctadmin.exe (User 'SERVIÇO DE REDE')
O8 - Extra context menu item: E&xportar para o Microsoft Excel - res://C:\PROGRA~2\MICROS~1\Office12\EXCEL.EXE/3000
O9 - Extra button: Enviar para o OneNote - {2670000A-7350-4f3c-8081-5663EE0C6C49} - C:\PROGRA~2\MICROS~1\Office12\ONBttnIE.dll
O9 - Extra 'Tools' menuitem: &Enviar para o OneNote - {2670000A-7350-4f3c-8081-5663EE0C6C49} - C:\PROGRA~2\MICROS~1\Office12\ONBttnIE.dll
O9 - Extra button: Research - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~2\MICROS~1\Office12\REFIEBAR.DLL
O10 - Unknown file in Winsock LSP: c:\program files (x86)\common files\microsoft shared\windows live\wlidnsp.dll
O10 - Unknown file in Winsock LSP: c:\program files (x86)\common files\microsoft shared\windows live\wlidnsp.dll
O11 - Options group: [ACCELERATED_GRAPHICS] Accelerated graphics
O18 - Protocol: grooveLocalGWS - {88FED34C-F0CA-4636-A375-3CB6248B04CD} - C:\Program Files (x86)\Microsoft Office\Office12\GrooveSystemServices.dll
O23 - Service: SAS Core Service (!SASCORE) - SUPERAntiSpyware.com - C:\Program Files\SUPERAntiSpyware\SASCORE64.EXE

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: @%SystemRoot%\system32\Alg.exe,-112 (ALG) - Unknown owner - C:\Windows\System32\alg.exe (file missing)
O23 - Service: Apple Mobile Device Service - Apple Inc. - C:\Program Files\Common Files\Apple\Mobile Device Support\AppleMobileDeviceService.exe
O23 - Service: Serviço do Bonjour (Bonjour Service) - Apple Inc. - C:\Program Files\Bonjour\mDNSResponder.exe
O23 - Service: EasyAntiCheat - EasyAntiCheat Ltd - C:\Windows\system32\EasyAntiCheat.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: NVIDIA GeForce Experience Service (GfExperienceService) - NVIDIA Corporation - C:\Program Files\NVIDIA Corporation\GeForce Experience Service\GfExperienceService.exe

O23 - Service: Serviço do Google Update (gupdate) (gupdate) - Google Inc. - C:\Program Files (x86)\Google\Update\GoogleUpdate.exe
O23 - Service: Serviço do Google Update (gupdatem) (gupdatem) - Google Inc. - C:\Program Files (x86)\Google\Update\GoogleUpdate.exe

O23 - Service: LogMeIn Hamachi Tunneling Engine (Hamachi2Svc) - LogMeIn Inc. - C:\Program Files (x86)\LogMeIn Hamachi\hamachi-2.exe
O23 - Service: iPod Service - Apple Inc. - C:\Program Files\iPod\bin\iPodService.exe
O23 - Service: @keyiso.dll,-100 (KeyIso) - Unknown owner - C:\Windows\system32\lsass.exe (file missing)
O23 - Service: LMIGuardianSvc - LogMeIn, Inc. - C:\Program Files (x86)\LogMeIn Hamachi\LMIGuardianSvc.exe
O23 - Service: MBAMService - Malwarebytes Corporation - C:\Program Files (x86)\Malwarebytes Anti-Malware\mbamservice.exe
O23 - Service: Mozilla Maintenance Service (MozillaMaintenance) - Mozilla Foundation - C:\Program Files (x86)\Mozilla Maintenance Service\maintenanceservice.exe
O23 - Service: @comres.dll,-2797 (MSDTC) - Unknown owner - C:\Windows\System32\msdtc.exe (file missing)
O23 - Service: Panda Protection Service (NanoServiceMain) - Panda Security, S.L. - C:\Program Files (x86)\Panda Security\Panda Security Protection\PSANHost.exe
O23 - Service: NBService - Nero AG - C:\Program Files (x86)\Nero\Nero 7\Nero BackItUp\NBService.exe
O23 - Service: @%SystemRoot%\System32\netlogon.dll,-102 (Netlogon) - Unknown owner - C:\Windows\system32\lsass.exe (file missing)
O23 - Service: NMIndexingService - Nero AG - C:\Program Files (x86)\Common Files\Ahead\Lib\NMIndexingService.exe
O23 - Service: NVIDIA Network Service (NvNetworkService) - NVIDIA Corporation - C:\Program Files (x86)\NVIDIA Corporation\NetService\NvNetworkService.exe
O23 - Service: NVIDIA Streamer Service (NvStreamSvc) - NVIDIA Corporation - C:\Program Files\NVIDIA Corporation\NvStreamSrv\nvstreamsvc.exe
O23 - Service: NVIDIA Display Driver Service (nvsvc) - Unknown owner - C:\Windows\system32\nvvsvc.exe (file missing)
O23 - Service: Panda Devices Agent (PandaAgent) - Panda Security, S.L. - C:\Program Files (x86)\Panda Security\Panda Devices Agent\AgentSvc.exe
O23 - Service: PnkBstrA - Unknown owner - C:\Windows\system32\PnkBstrA.exe
O23 - Service: @%systemroot%\system32\psbase.dll,-300 (ProtectedStorage) - Unknown owner - C:\Windows\system32\lsass.exe (file missing)
O23 - Service: Panda Product Service (PSUAService) - Panda Security, S.L. - C:\Program Files (x86)\Panda Security\Panda Security Protection\PSUAService.exe
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\snmptrap.exe,-3 (SNMPTRAP) - Unknown owner - C:\Windows\System32\snmptrap.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: Steam Client Service - Valve Corporation - C:\Program Files (x86)\Common Files\Steam\SteamService.exe
O23 - Service: NVIDIA Stereoscopic 3D Driver Service (Stereo Service) - NVIDIA Corporation - C:\Program Files (x86)\NVIDIA Corporation\3D Vision\nvSCPAPISvr.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: @%SystemRoot%\system32\Wat\WatUX.exe,-601 (WatAdminSvc) - Unknown owner - C:\Windows\system32\Wat\WatAdminSvc.exe (file missing)
O23 - Service: @%systemroot%\system32\wbengine.exe,-104 (wbengine) - Unknown owner - C:\Windows\system32\wbengine.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 - C:\Program Files (x86)\Windows Media Player\wmpnetwk.exe (file missing)

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