Netzwerkverbindung kappt nach unbestimmter Zeit und man kann nicht mehr mit Netzwerk verbinden!

Hallo, in letzter Zeit habe ich das Problem, dass nach einer Unbestimmten Zeit die Netzwerkverbindung abbricht und man sich nicht mehr mit dem W-Lan verbinden kann. Ich denke es ist ein Virus. Ich habe bereits mit HiJackThis auswerten lassen und habe es hier reinkopiert(also den LOG):

Logfile of Trend Micro HijackThis v2.0.4
Scan saved at 09:19:12, on 03.04.2015
Platform: Unknown Windows (WinNT 6.02.1008)
MSIE: Internet Explorer v11.0 (11.00.9600.17037)
Boot mode: Normal

Running processes:
C:\Program Files (x86)\NVIDIA Corporation\Update Core\NvBackend.exe
C:\Program Files (x86)\Hewlett-Packard\HP Quick Launch Buttons\QLBCtrl.exe
C:\Program Files (x86)\AVG\AVG2014\avgui.exe
C:\Program Files (x86)\AVG Web TuneUp\vprot.exe
C:\Windows\SysWOW64\ctfmon.exe
C:\Program Files (x86)\AVG Web TuneUp\avgcefrend.exe
C:\Program Files (x86)\Steam\Steam.exe
C:\Program Files (x86)\Steam\bin\steamwebhelper.exe
C:\Program Files (x86)\Steam\bin\steamwebhelper.exe
C:\Program Files (x86)\Steam\bin\steamwebhelper.exe
C:\Program Files (x86)\Google\Chrome\Application\chrome.exe
C:\Program Files (x86)\Google\Chrome\Application\chrome.exe
C:\Program Files (x86)\Google\Chrome\Application\chrome.exe
C:\Program Files (x86)\Skype\Phone\Skype.exe
C:\Program Files (x86)\Google\Chrome\Application\chrome.exe
C:\Program Files (x86)\Google\Chrome\Application\chrome.exe
C:\Users***\Downloads\hijackthis_5833.exe

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 = https://mysearch.avg.com/?cid={29227648-6EAA-4862-8C… 13:36:45&v=4.1.0.411&pid=wtu&sg=&sap=hp
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
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName =
F2 - REG:system.ini: UserInit=userinit.exe
O2 - BHO: AVG Web TuneUp - {95B7759C-8C7F-4BF1-B163-73684A933233} - C:\Program Files (x86)\AVG Web TuneUp\4.1.0.411\AVG Web TuneUp.dll
O4 - HKLM…\Run: [QlbCtrl.exe] C:\Program Files (x86)\Hewlett-Packard\HP Quick Launch Buttons\QlbCtrl.exe /Start
O4 - HKLM…\Run: [SunJavaUpdateSched] „C:\Program Files (x86)\Common Files\Java\Java Update\jusched.exe“
O4 - HKLM…\Run: [AVG_UI] „C:\Program Files (x86)\AVG\AVG2014\avgui.exe“ /TRAYONLY
O4 - HKLM…\Run: [vProt] „C:\Program Files (x86)\AVG Web TuneUp\vprot.exe“
O4 - HKCU…\Run: [Skype] „C:\Program Files (x86)\Skype\Phone\Skype.exe“ /minimized /regrun
O4 - HKCU…\Run: [Steam] „C:\Program Files (x86)\Steam\steam.exe“ -silent
O11 - Options group: [ACCELERATED_GRAPHICS] Accelerated graphics
O23 - Service: @%SystemRoot%\system32\Alg.exe,-112 (ALG) - Unknown owner - C:\Windows\System32\alg.exe (file missing)
O23 - Service: AVG Firewall (avgfws) - AVG Technologies CZ, s.r.o. - C:\Program Files (x86)\AVG\AVG2014\avgfws.exe
O23 - Service: AVGIDSAgent - AVG Technologies CZ, s.r.o. - C:\Program Files (x86)\AVG\AVG2014\avgidsagent.exe
O23 - Service: AVG WatchDog (avgwd) - AVG Technologies CZ, s.r.o. - C:\Program Files (x86)\AVG\AVG2014\avgwdsvc.exe
O23 - Service: @oem12.inf,%BcmBtRSupport.SVCNAME%;Bluetooth Driver Management Service (BcmBtRSupport) - Unknown owner - C:\Windows\system32\BtwRSupportService.exe (file missing)
O23 - Service: Com4QLBEx - Hewlett-Packard Development Company, L.P. - C:\Program Files (x86)\Hewlett-Packard\HP Quick Launch Buttons\Com4QLBEx.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: Google Update-Dienst (gupdate) (gupdate) - Google Inc. - C:\Program Files (x86)\Google\Update\GoogleUpdate.exe
O23 - Service: Google Update-Dienst (gupdatem) (gupdatem) - Google Inc. - C:\Program Files (x86)\Google\Update\GoogleUpdate.exe
O23 - Service: hpqwmiex - Hewlett-Packard Development Company, L.P. - C:\Program Files (x86)\Hewlett-Packard\Shared\hpqwmiex.exe
O23 - Service: @%SystemRoot%\system32\ieetwcollectorres.dll,-1000 (IEEtwCollectorService) - Unknown owner - C:\Windows\system32\IEEtwCollector.exe (file missing)
O23 - Service: @keyiso.dll,-100 (KeyIso) - Unknown owner - C:\Windows\system32\lsass.exe (file missing)
O23 - Service: @%SystemRoot%\System32\netlogon.dll,-102 (Netlogon) - Unknown owner - C:\Windows\system32\lsass.exe (file missing)
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: @%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: Skype Updater (SkypeUpdate) - Skype Technologies - C:\Program Files (x86)\Skype\Updater\Updater.exe
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: AVG PC TuneUp Service (TuneUp.UtilitiesSvc) - AVG - C:\Program Files (x86)\AVG\AVG PC TuneUp\TuneUpUtilitiesService64.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: vToolbarUpdater18.4.0 - Unknown owner - C:\Program Files (x86)\Common Files\AVG Secure Search\vToolbarUpdater\18.4.0\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 - C:\Program Files (x86)\Windows Defender\NisSrv.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\wlms\wlms.exe,-1 (WLMS) - Unknown owner - C:\Windows\system32\wlms\wlms.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)
O23 - Service: WtuSystemSupport - Unknown owner - C:\Program Files (x86)\AVG Web TuneUp\WtuSystemSupport.exe


End of file - 8316 bytes

Danke für eine Antwort
MFG
Andreas