Unzählige Abstürze, Win7 sehr instabil und langsam

ComboFix 15-04-09.01 - xxx 11.04.2015  22:42:29.4.2 - x86
Microsoft Windows 7 Professional   6.1.7601.1.1252.49.1031.18.3579.2636 [GMT 2:00]
ausgeführt von:: c:\users\xxx\Desktop\ComboFix.exe
AV: avast! Antivirus *Disabled/Updated* {17AD7D40-BA12-9C46-7131-94903A54AD8B}
SP: avast! Antivirus *Disabled/Updated* {ACCC9CA4-9C28-93C8-4B81-AFE241D3E736}
SP: Windows Defender *Enabled/Outdated* {D68DDC3A-831F-4fae-9E44-DA132C1ACF46}
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(((((((((((((((((((((((   Dateien erstellt von 2015-03-11 bis 2015-04-11  ))))))))))))))))))))))))))))))
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2015-04-11 08:12 . 2015-04-11 08:23	--------	d-----w-	c:\programdata\Malwarebytes' Anti-Malware (portable)
2015-04-11 08:12 . 2015-04-11 08:12	119512	----a-w-	c:\windows\system32\drivers\MBAMSwissArmy.sys
2015-04-11 08:11 . 2015-04-11 08:11	92888	----a-w-	c:\windows\system32\drivers\mbamchameleon.sys
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((((((((((((((((((((((((((((((((((((   Find3M Bericht   ))))))))))))))))))))))))))))))))))))))))))))))))))))))
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2015-02-16 12:37 . 2015-02-16 12:40	96680	----a-w-	c:\windows\system32\WindowsAccessBridge.dll
2015-02-16 11:53 . 2015-02-16 11:52	73480	----a-w-	c:\windows\system32\drivers\aswMonFlt.sys
2015-02-16 11:53 . 2015-02-16 11:52	787800	----a-w-	c:\windows\system32\drivers\aswSnx.sys
2015-02-16 11:53 . 2015-02-16 11:52	423784	----a-w-	c:\windows\system32\drivers\aswSP.sys
2015-02-16 11:52 . 2015-02-16 11:52	91496	----a-w-	c:\windows\system32\drivers\aswStm.sys
2015-02-16 11:52 . 2015-02-16 11:52	49944	----a-w-	c:\windows\system32\drivers\aswRvrt.sys
2015-02-16 11:52 . 2015-02-16 11:52	24184	----a-w-	c:\windows\system32\drivers\aswHwid.sys
2015-02-16 11:52 . 2015-02-16 11:52	206248	----a-w-	c:\windows\system32\drivers\aswVmm.sys
2015-02-16 11:52 . 2015-02-16 11:52	81768	----a-w-	c:\windows\system32\drivers\aswRdr2.sys
2015-02-16 11:52 . 2015-02-16 11:52	43152	----a-w-	c:\windows\avastSS.scr
2014-10-20 11:25 . 2014-10-20 11:24	50063360	----a-w-	c:\program files\GUT6123.tmp
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((((((((((((((((((((((((((((   Autostartpunkte der Registrierung   ))))))))))))))))))))))))))))))))))))))))
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*Hinweis* leere Einträge & legitime Standardeinträge werden nicht angezeigt. 
REGEDIT4
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[HKEY_LOCAL_MACHINE\software\microsoft\windows\currentversion\explorer\shelliconoverlayidentifiers\00avast]
@="{472083B0-C522-11CF-8763-00608CC02F24}"
[HKEY_CLASSES_ROOT\CLSID\{472083B0-C522-11CF-8763-00608CC02F24}]
2015-02-16 11:52	723976	----a-w-	c:\program files\AVAST Software\Avast\ashShell.dll
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[HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
"AppEx Accelerator UI"="c:\program files\AMD Quick Stream\AMDQuickStream.exe" [2014-03-31 370912]
"HydraVisionDesktopManager"="c:\program files\ATI Technologies\HydraVision\HydraDM.exe" [2014-04-17 1967616]
"CCleaner Monitoring"="c:\program files\CCleaner\CCleaner.exe" [2015-01-20 5496600]
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[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
"RTHDVCPL"="c:\program files\Realtek\Audio\HDA\RtkNGUI.exe" [2011-09-15 6253160]
"AtherosBtStack"="c:\program files\Bluetooth Suite\BtvStack.exe" [2011-03-01 490656]
"AthBtTray"="c:\program files\Bluetooth Suite\AthBtTray.exe" [2011-03-01 302240]
"SynTPEnh"="c:\program files\Synaptics\SynTP\SynTPEnh.exe" [2011-10-14 2299176]
"StartCCC"="c:\program files\ATI Technologies\ATI.ACE\Core-Static\x86\CLIStart.exe" [2014-04-17 748256]
"AvastUI.exe"="c:\program files\AVAST Software\Avast\AvastUI.exe" [2015-03-18 5227648]
"SunJavaUpdateSched"="c:\program files\Common Files\Java\Java Update\jusched.exe" [2014-12-17 508800]
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[HKEY_LOCAL_MACHINE\software\microsoft\windows\currentversion\policies\system]
"ConsentPromptBehaviorAdmin"= 5 (0x5)
"ConsentPromptBehaviorUser"= 3 (0x3)
"EnableUIADesktopToggle"= 0 (0x0)
"SoftwareSASGeneration"= 1 (0x1)
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[HKEY_LOCAL_MACHINE\software\microsoft\shared tools\msconfig\startupreg\Skype]
2014-12-11 10:20	30877280	----a-r-	c:\program files\Skype\Phone\Skype.exe
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R2 aswStm;aswStm;c:\windows\system32\drivers\aswStm.sys [2015-02-16 91496]
R2 SkypeUpdate;Skype Updater;c:\program files\Skype\Updater\Updater.exe [2014-12-11 315496]
R3 amdiox86;AMD IO Driver;c:\windows\system32\DRIVERS\amdiox86.sys [x]
R3 dmvsc;dmvsc;c:\windows\system32\drivers\dmvsc.sys [2010-11-20 62464]
R3 gnvgvkgd;gnvgvkgd;c:\windows\system32\drivers\ngiodriver_x86 [x]
R3 IEEtwCollectorService;Internet Explorer ETW Collector Service;c:\windows\system32\IEEtwCollector.exe [2014-11-22 102912]
R3 RdpVideoMiniport;Remote Desktop Video Miniport Driver;c:\windows\system32\drivers\rdpvideominiport.sys [2012-08-23 14848]
R3 TsUsbFlt;TsUsbFlt;c:\windows\system32\drivers\tsusbflt.sys [2013-10-02 49152]
R3 TsUsbGD;Remote Desktop Generic USB Device;c:\windows\system32\drivers\TsUsbGD.sys [2012-08-23 27136]
S0 amd_sata;amd_sata;c:\windows\system32\DRIVERS\amd_sata.sys [2011-04-16 66688]
S0 amd_xata;amd_xata;c:\windows\system32\DRIVERS\amd_xata.sys [2011-04-16 33408]
S0 aswRvrt;avast! Revert; [x]
S0 aswVmm;avast! VM Monitor; [x]
S1 aswSnx;aswSnx;c:\windows\system32\drivers\aswSnx.sys [2015-02-16 787800]
S1 aswSP;aswSP;c:\windows\system32\drivers\aswSP.sys [2015-02-16 423784]
S2 AERTFilters;Andrea RT Filters Service;c:\program files\Realtek\Audio\HDA\AERTSrv.exe [2009-11-18 87968]
S2 AMD External Events Utility;AMD External Events Utility;c:\windows\system32\atiesrxx.exe [2014-04-18 208896]
S2 AMD FUEL Service;AMD FUEL Service;c:\program files\ATI Technologies\ATI.ACE\Fuel\Fuel.Service.exe [2014-04-17 276992]
S2 APXACC;AppEx Networks Accelerator LWF;c:\windows\system32\DRIVERS\appexDrv.sys [2014-03-28 184032]
S2 aswHwid;avast! HardwareID;c:\windows\system32\drivers\aswHwid.sys [2015-02-16 24184]
S2 aswMonFlt;aswMonFlt;c:\windows\system32\drivers\aswMonFlt.sys [2015-02-16 73480]
S2 Atheros Bt&Wlan Coex Agent;Atheros Bt&Wlan Coex Agent;c:\program files\Bluetooth Suite\Ath_CoexAgent.exe [2011-03-01 138400]
S2 IconMan_R;IconMan_R;c:\program files\Realtek\Realtek PCIE Card Reader\RIconMan.exe [2010-12-27 1817088]
S3 AtiHDAudioService;AMD Function Driver for HD Audio Service;c:\windows\system32\drivers\AtihdW73.sys [2013-12-19 77824]
S3 BTATH_BUS;Atheros Bluetooth Bus;c:\windows\system32\DRIVERS\btath_bus.sys [2011-03-01 24736]
S3 BtFilter;BtFilter;c:\windows\system32\DRIVERS\btfilter.sys [2011-03-01 242336]
S3 clwvd;CyberLink WebCam Virtual Driver;c:\windows\system32\DRIVERS\clwvd.sys [2010-07-28 27632]
S3 RSPCIESTOR;Realtek PCIE CardReader Driver;c:\windows\system32\DRIVERS\RtsPStor.sys [2011-02-15 251496]
S3 RTL8167;Realtek 8167 NT Driver;c:\windows\system32\DRIVERS\Rt86win7.sys [2011-06-10 394856]
S3 usbfilter;AMD USB Filter Driver;c:\windows\system32\DRIVERS\usbfilter.sys [2010-12-16 37504]
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------- Zusätzlicher Suchlauf -------
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uInternet Settings,ProxyOverride = *.local
TCP: DhcpNameServer = 192.168.178.1
FF - ProfilePath - c:\users\xxx\AppData\Roaming\Mozilla\Firefox\Profiles\n5mi6n41.default\
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[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\services\gnvgvkgd]
"ImagePath"="\??\c:\windows\system32\drivers\ngiodriver_x86"
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--------------------- Gesperrte Registrierungsschluessel ---------------------
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[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\PCW\Security]
@Denied: (Full) (Everyone)
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Zeit der Fertigstellung: 2015-04-11  23:02:40
ComboFix-quarantined-files.txt  2015-04-11 21:02
ComboFix2.txt  2015-02-16 12:26
ComboFix3.txt  2014-05-14 07:37
ComboFix4.txt  2013-06-06 08:28
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Vor Suchlauf: 12 Verzeichnis(se), 280.334.675.968 Bytes frei
Nach Suchlauf: 13 Verzeichnis(se), 279.922.589.696 Bytes frei
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- - End Of File - - 7E4DC3C375DDBCD3E68EC3A6BD2A7338