Bonjour a tous,
 
Depuis quelques temps le son de mon PC portable Lenovo G585 saute sur internet, le curseur de la souris clignote et l'ordi rame en général. J'ai fais les mises a jours des Pilotes avec Toutlesdrivers et rien ne change, l'antivirus quant à lui, n'a pas l'air de détecter de virus... Une solution s'il vous plait. Merci par avance.
 
Je peux vous fournir la config complète de l'ordi et le rapport hijackthis si besoin

La config de l'ordi :  
 
Système d'exploitation
 
Windows 8 ?(X64)?
Date d'installation : 18/01/2013
 
 
Processeur
 
AMD K140 Cadencé à 1.40 GHz
Fréquence mesurée (core0) : 1.42 GHz
Nombre de coeurs : 2 physique(s), 2 logique(s)
Socket : Socket FT1 BGA
 
 
Carte mère
 
LENOVO Lenovo G585 31900003WIN8 STD MLT
Numéro de série (carte mère) : CB18821763
SKU Number : 123456789
Version du bios : 6CCN88WW(V8.01)
Date : 22/08/2012
 
 
Chipset
 
Pont nord : AMD A40/A50 Series FCH
Identifiant de révision : 00
Pont sud : AMD A55/A60M
Identifiant de révision : 11
 
 
Mémoire
 
4 Go de mémoire totale de type DDR3 à 541.14 MHz
Barrette Ramaxel Technology de 4 Go
Fréquence maximale : 800 MHz
Bande passante : PC3-12800
 
 
Carte Graphique
 
AMD Radeon HD 7310 Graphics
Version DirectX installée : 11.0
 
 
Disque dur
 
Disque dur ST1000LM024HN-M101MBB de 931.51 Go SATA II
Firmware : 2AR10001
Version du SATA : SATA Rev 2.6
Numéro de série : S2U5J9CC968076
Température HDD : 44 °C
Temps de fonctionnement : 253 heures
 
 
Lecteurs optiques
 
Optiarc DVD RW AD-7740H
Version du firmware : A842
 
 
Réseau
 
Carte virtuelle directe Wi-Fi Microsoft
Type d'adaptateur : IEEE 802.11 wireless
Realtek Semiconductor Co., Ltd. RTL8101E/RTL8102E PCI Express Fast Ethernet controller
Type d'adaptateur : ethernet
Atheros Communications Inc. AR9285 Wireless Network Adapter (PCI-Express)
Type d'adaptateur : IEEE 802.11 wireless
Software Loopback Interface 1
Type d'adaptateur : Loopback
 
 
Cartes multimedia
 
Advanced Micro Devices [AMD] FCH Azalia Controller

ET le rapport hijackthis :
 
Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 20:24:41, on 06/02/2013
Platform: Unknown Windows (WinNT 6.02.1008)
MSIE: Internet Explorer v10.0 (10.00.9200.16453)
Boot mode: Normal
 
Running processes:
C:\Users\LeGrandDuc\AppData\Roaming\cacaoweb\cacaoweb.exe
C:\Program Files (x86)\uTorrent\uTorrent.exe
C:\Program Files (x86)\USB Camera\VM331STI.EXE
C:\Program Files (x86)\Lenovo\YouCam\YCMMirage.exe
C:\Program Files (x86)\Lenovo\YouCam\YouCamTray.exe
C:\Program Files (x86)\Lenovo\PowerDVD10\PDVD10Serv.exe
C:\Program Files (x86)\Intel\IntelAppStore\bin\ismagent.exe
C:\Program Files (x86)\iTunes\iTunesHelper.exe
C:\Program Files (x86)\Mozilla Firefox\firefox.exe
C:\Program Files (x86)\Trend Micro\HijackThis\HijackThis.exe
C:\WINDOWS\SysWOW64\DllHost.exe
 
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://lenovo13.msn.com
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 = http://google.fr/
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://go.microsoft.com/fwlink/p/?LinkId=255141
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\Main,Start Page = http://go.microsoft.com/fwlink/p/?LinkId=255141
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
R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings,ProxyOverride = *.local
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName =
F2 - REG:system.ini: UserInit=userinit.exe
O4 - HKLM\..\Run: [331BigDog] C:\Program Files (x86)\USB Camera\VM331STI.EXE
O4 - HKLM\..\Run: [Dolby Advanced Audio v2] "C:\Program Files (x86)\Dolby Advanced Audio v2\pcee4.exe" -autostart
O4 - HKLM\..\Run: [YouCam Mirage] "C:\Program Files (x86)\Lenovo\YouCam\YCMMirage.exe"
O4 - HKLM\..\Run: [YouCam Tray] "C:\Program Files (x86)\Lenovo\YouCam\YouCamTray.exe" /s
O4 - HKLM\..\Run: [UpdateP2GShortCut] "C:\Program Files (x86)\Lenovo\Power2Go\MUITransfer\MUIStartMenu.exe" "C:\Program Files (x86)\Lenovo\Power2Go" UpdateWithCreateOnce "SOFTWARE\CyberLink\Power2Go\5.0"
O4 - HKLM\..\Run: [RemoteControl10] "C:\Program Files (x86)\Lenovo\PowerDVD10\PDVD10Serv.exe"
O4 - HKLM\..\Run: [mcui_exe] "C:\Program Files\McAfee.com\Agent\mcagent.exe" /runkey
O4 - HKLM\..\Run: [Intel AppUp(SM) center] "C:\Program Files (x86)\Intel\IntelAppStore\bin\ismagent.exe" --domain-id F0399437-FD0C-4A48-B101-F0314A6172E4
O4 - HKLM\..\Run: [APSDaemon] "C:\Program Files (x86)\Common Files\Apple\Apple Application Support\APSDaemon.exe"
O4 - HKLM\..\Run: [iTunesHelper] "C:\Program Files (x86)\iTunes\iTunesHelper.exe"
O4 - HKLM\..\Run: [StartCCC] "C:\Program Files (x86)\ATI Technologies\ATI.ACE\Core-Static\CLIStart.exe" MSRun
O4 - HKCU\..\Run: [cacaoweb] "C:\Users\LeGrandDuc\AppData\Roaming\cacaoweb\cacaoweb.exe" -noplayer
O4 - HKCU\..\Run: [uTorrent] "C:\Program Files (x86)\uTorrent\uTorrent.exe" /MINIMIZED
O4 - HKCU\..\Run: [ccleaner] "C:\Program Files\CCleaner\CCleaner64.exe" /AUTO
O11 - Options group: [ACCELERATED_GRAPHICS] Accelerated graphics
O13 - Gopher Prefix:
O18 - Filter: application/x-mfe-ipt - {3EF5086B-5478-4598-A054-786C45D75692} - c:\PROGRA~2\mcafee\msc\mcsniepl.dll
O23 - Service: McAfee Application Installer Cleanup (0313341360086909) (0313341360086909mcinstcleanup) - McAfee, Inc. - C:\WINDOWS\TEMP\031334~1.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: 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: Apple Mobile Device - Apple Inc. - C:\Program Files (x86)\Common Files\Apple\Mobile Device Support\AppleMobileDeviceService.exe
O23 - Service: Service Bonjour (Bonjour Service) - Apple Inc. - C:\Program Files\Bonjour\mDNSResponder.exe
O23 - Service: @C:\WINDOWS\system32\CxAudMsg64.exe,-100 (CxAudMsg) - Unknown owner - C:\WINDOWS\system32\CxAudMsg64.exe (file missing)
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: Service Google Update (gupdate) (gupdate) - Google Inc. - C:\Program Files (x86)\Google\Update\GoogleUpdate.exe
O23 - Service: Service Google Update (gupdatem) (gupdatem) - Google Inc. - C:\Program Files (x86)\Google\Update\GoogleUpdate.exe
O23 - Service: Service de l'iPod (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: Ma-Config Service (maconfservice) - CybelSoft - C:\Program Files\ma-config.com\x64\maconfservice.exe
O23 - Service: McAfee Activation Service (McAWFwk) - McAfee, Inc. - c:\PROGRA~1\mcafee\msc\mcawfwk.exe
O23 - Service: McAfee Personal Firewall Service (McMPFSvc) - McAfee, Inc. - C:\Program Files\Common Files\McAfee\McSvcHost\McSvHost.exe
O23 - Service: McAfee Services (mcmscsvc) - McAfee, Inc. - C:\Program Files\Common Files\mcafee\McSvcHost\McSvHost.exe
O23 - Service: McAfee VirusScan Announcer (McNaiAnn) - McAfee, Inc. - C:\Program Files\Common Files\mcafee\McSvcHost\McSvHost.exe
O23 - Service: McAfee Network Agent (McNASvc) - McAfee, Inc. - C:\Program Files\Common Files\mcafee\McSvcHost\McSvHost.exe
O23 - Service: McAfee Scanner (McODS) - McAfee, Inc. - C:\Program Files\mcafee\VirusScan\mcods.exe
O23 - Service: McAfee OOBE Service (McOobeSv) - McAfee, Inc. - C:\Program Files\Common Files\mcafee\McSvcHost\McSvHost.exe
O23 - Service: McAfee Proxy Service (McProxy) - McAfee, Inc. - C:\Program Files\Common Files\mcafee\McSvcHost\McSvHost.exe
O23 - Service: McAfee McShield (McShield) - McAfee, Inc. - C:\Program Files\Common Files\McAfee\SystemCore\\mcshield.exe
O23 - Service: McAfee Firewall Core Service (mfefire) - McAfee, Inc. - C:\Program Files\Common Files\McAfee\SystemCore\\mfefire.exe
O23 - Service: McAfee Validation Trust Protection Service (mfevtp) - Unknown owner - C:\WINDOWS\system32\mfevtps.exe (file missing)
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: McAfee Anti-Spam Service (MSK80Service) - McAfee, Inc. - C:\Program Files\Common Files\McAfee\McSvcHost\McSvHost.exe
O23 - Service: @%SystemRoot%\System32\netlogon.dll,-102 (Netlogon) - Unknown owner - C:\WINDOWS\system32\lsass.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\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: @%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\wbengine.exe,-104 (wbengine) - Unknown owner - C:\WINDOWS\system32\wbengine.exe (file missing)
O23 - Service: @%ProgramFiles%\Windows Defender\MpAsDesc.dll,-310 (WinDefend) - Unknown owner - C:\Program Files (x86)\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 - C:\Program Files (x86)\Windows Media Player\wmpnetwk.exe (file missing)
End of file - 9294 bytes
 
Merci