Help Needed for NVIDIA 8400M GT GPU

Hello there everyone, I hope not to get flamed by starting a new thread about my problem, I tried following various steps and fixes suggested in alot of other similar threads but still cant figure out whats up with my Vaio VGC-LT19U which runs on Windows Vista ultimate 64bit ( Sorry for posting in seven forum as this is the best place to ask for help).
Everything works perfectly on my PC until few days ago, Im not sure what happened but when I turned on my PC, the interface and appearance was reverted into windows standard, and since then I could not set back to Vista basic look or Aero, Im pretty sure it have something to do with the GPU as I checked the Windows Experience Index and its rated at 1.0! . So I tried reinstalling the drivers which worked the last time, but still could not get it to work..I have also tried to fix the registry and yesterday an error message came up on start up with nvsvc.dll could not be located, however when I checked the services, its there and started..this is really bugging me as I tried all I know to fix this issue..even system restore would not work for me..not only that, the computer seems to run abit slower than usual. If anyone have some suggestions or ideas..it would be fantastic and I miss a better graphic on this PC rather then looking like windows 95! Thanks in advance!

and heres the HJT scan log I did today

Logfile of Trend Micro HijackThis v2.0.4
Scan saved at 3:40:46 PM, on 13/02/2011
Platform: Windows Vista SP2 (WinNT 6.00.1906)
MSIE: Internet Explorer v8.00 (8.00.6001.19019)
Boot mode: Normal

Running processes:
C:\Windows\System32\spool\drivers\x64\3\WrtMon.exe
C:\Program Files (x86)\W3i\InstallIQUpdater\InstallIQUpdater.exe
C:\Program Files (x86)\ScanSoft\OmniPageSE4\OpWareSE4.exe
C:\Program Files (x86)\Avira\AntiVir Desktop\avgnt.exe
C:\Program Files (x86)\Sony\AppMonUtil\AppMonUtility.exe
C:\Program Files (x86)\Common Files\Java\Java Update\jusched.exe
C:\Windows\System32\spool\drivers\x64\3\WrtProc.exe
C:\Program Files (x86)\Mozilla Firefox\firefox.exe
C:\Program Files (x86)\Mozilla Firefox\plugin-container.exe
C:\Program Files (x86)\Windows Live\Messenger\msnmsgr.exe
C:\Program Files (x86)\Windows Live\Contacts\wlcomm.exe
C:\Program Files (x86)\Trend Micro\HiJackThis\HiJackThis.exe
C:\Windows\SysWOW64\DllHost.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = Bing
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = MSN.com
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = Bing
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = Bing
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = MSN.com
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 =
R3 - URLSearchHook: Vuze Remote Toolbar - {ba14329e-9550-4989-b3f2-9732e92d17cc} - C:\Program Files (x86)\Vuze_Remote\tbVuze.dll
F2 - REG:system.ini: UserInit=userinit.exe
O1 - Hosts: ::1 localhost
O2 - BHO: &Yahoo! Toolbar Helper - {02478D38-C3F9-4efb-9B51-7695ECA05670} - C:\Program Files (x86)\Yahoo!\Companion\Installs\cpn0\yt.dll
O2 - BHO: Adobe PDF Reader Link Helper - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files (x86)\Common Files\Adobe\Acrobat\ActiveX\AcroIEHelper.dll
O2 - BHO: ContributeBHO Class - {074C1DC5-9320-4A9A-947D-C042949C6216} - C:\Program Files (x86)\Adobe\/Adobe Contribute CS3/contributeieplugin.dll
O2 - BHO: Windows Live ID Sign-in Helper - {9030D464-4C02-4ABF-8ECC-5164760863C6} - C:\Program Files (x86)\Common Files\Microsoft Shared\Windows Live\WindowsLiveLogin.dll
O2 - BHO: Windows Live Messenger Companion Helper - {9FDDE16B-836F-4806-AB1F-1455CBEFF289} - C:\Program Files (x86)\Windows Live\Companion\companioncore.dll
O2 - BHO: Adobe PDF Conversion Toolbar Helper - {AE7CD045-E861-484f-8273-0445EE161910} - C:\Program Files (x86)\Adobe\Acrobat 8.0\Acrobat\AcroIEFavClient.dll
O2 - BHO: Vuze Remote Toolbar - {ba14329e-9550-4989-b3f2-9732e92d17cc} - C:\Program Files (x86)\Vuze_Remote\tbVuze.dll
O2 - BHO: Java(tm) Plug-In 2 SSV Helper - {DBC80044-A445-435b-BC74-9C25C1C588A9} - C:\Program Files (x86)\Java\jre6\bin\jp2ssv.dll
O2 - BHO: SingleInstance Class - {FDAD4DA1-61A2-4FD8-9C17-86F7AC245081} - C:\Program Files (x86)\Yahoo!\Companion\Installs\cpn0\YTSingleInstance.dll
O3 - Toolbar: Adobe PDF - {47833539-D0C5-4125-9FA8-0819E2EAAC93} - C:\Program Files (x86)\Adobe\Acrobat 8.0\Acrobat\AcroIEFavClient.dll
O3 - Toolbar: Contribute Toolbar - {517BDDE4-E3A7-4570-B21E-2B52B6139FC7} - C:\Program Files (x86)\Adobe\/Adobe Contribute CS3/contributeieplugin.dll
O3 - Toolbar: Yahoo! Toolbar - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\Program Files (x86)\Yahoo!\Companion\Installs\cpn0\yt.dll
O3 - Toolbar: Vuze Remote Toolbar - {ba14329e-9550-4989-b3f2-9732e92d17cc} - C:\Program Files (x86)\Vuze_Remote\tbVuze.dll
O4 - HKLM\..\Run: [SSBkgdUpdate] "C:\Program Files (x86)\Common Files\Scansoft Shared\SSBkgdUpdate\SSBkgdupdate.exe" -Embedding -boot
O4 - HKLM\..\Run: [OpwareSE4] "C:\Program Files (x86)\ScanSoft\OmniPageSE4\OpwareSE4.exe"
O4 - HKLM\..\Run: [avgnt] "C:\Program Files (x86)\Avira\AntiVir Desktop\avgnt.exe" /min
O4 - HKLM\..\Run: [AppMon Utility] "C:\Program Files (x86)\Sony\AppMonUtil\AppMonUtility.exe" @@@Start
O4 - HKLM\..\Run: [Adobe_ID0EYTHM] C:\PROGRA~2\COMMON~1\Adobe\ADOBEV~1\Server\bin\VERSIO~2.EXE
O4 - HKLM\..\Run: [SunJavaUpdateSched] "C:\Program Files (x86)\Common Files\Java\Java Update\jusched.exe"
O4 - HKLM\..\Run: [Korean IME Migration] C:\PROGRA~2\COMMON~1\MICROS~1\IME12\IMEKR\IMKRMIG.EXE
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files (x86)\QuickTime\QTTask.exe" -atboottime
O4 - HKCU\..\Run: [Sidebar] C:\Program Files\Windows Sidebar\sidebar.exe /autoRun
O4 - HKCU\..\Run: [Google Update] "C:\Users\faisal\AppData\Local\Google\Update\GoogleUpdate.exe" /c
O4 - HKCU\..\Run: [ehTray.exe] C:\Windows\ehome\ehTray.exe
O4 - HKCU\..\Run: [InstallIQUpdater] "C:\Program Files (x86)\W3i\InstallIQUpdater\InstallIQUpdater.exe" /silent /autorun
O4 - HKUS\S-1-5-19\..\Run: [Sidebar] %ProgramFiles%\Windows Sidebar\Sidebar.exe /detectMem (User 'LOCAL SERVICE')
O4 - HKUS\S-1-5-19\..\Run: [WindowsWelcomeCenter] rundll32.exe oobefldr.dll,ShowWelcomeCenter (User 'LOCAL SERVICE')
O4 - HKUS\S-1-5-20\..\Run: [Sidebar] %ProgramFiles%\Windows Sidebar\Sidebar.exe /detectMem (User 'NETWORK SERVICE')
O8 - Extra context menu item: Append to existing PDF - res://C:\Program Files (x86)\Adobe\Acrobat 8.0\Acrobat\AcroIEFavClient.dll/AcroIEAppend.html
O8 - Extra context menu item: Convert link target to Adobe PDF - res://C:\Program Files (x86)\Adobe\Acrobat 8.0\Acrobat\AcroIEFavClient.dll/AcroIECapture.html
O8 - Extra context menu item: Convert link target to existing PDF - res://C:\Program Files (x86)\Adobe\Acrobat 8.0\Acrobat\AcroIEFavClient.dll/AcroIEAppend.html
O8 - Extra context menu item: Convert selected links to Adobe PDF - res://C:\Program Files (x86)\Adobe\Acrobat 8.0\Acrobat\AcroIEFavClient.dll/AcroIECaptureSelLinks.html
O8 - Extra context menu item: Convert selected links to existing PDF - res://C:\Program Files (x86)\Adobe\Acrobat 8.0\Acrobat\AcroIEFavClient.dll/AcroIEAppendSelLinks.html
O8 - Extra context menu item: Convert selection to Adobe PDF - res://C:\Program Files (x86)\Adobe\Acrobat 8.0\Acrobat\AcroIEFavClient.dll/AcroIECapture.html
O8 - Extra context menu item: Convert selection to existing PDF - res://C:\Program Files (x86)\Adobe\Acrobat 8.0\Acrobat\AcroIEFavClient.dll/AcroIEAppend.html
O8 - Extra context menu item: Convert to Adobe PDF - res://C:\Program Files (x86)\Adobe\Acrobat 8.0\Acrobat\AcroIEFavClient.dll/AcroIECapture.html
O8 - Extra context menu item: E&xport to Microsoft Excel - res://C:\PROGRA~2\MICROS~3\Office14\EXCEL.EXE/3000
O8 - Extra context menu item: Se&nd to OneNote - res:///105
O9 - Extra button: @C:\Program Files (x86)\Windows Live\Companion\companionlang.dll,-600 - {0000036B-C524-4050-81A0-243669A86B9F} - C:\Program Files (x86)\Windows Live\Companion\companioncore.dll
O9 - Extra button: @C:\Program Files (x86)\Windows Live\Writer\WindowsLiveWriterShortcuts.dll,-1004 - {219C3416-8CB2-491a-A3C7-D9FCDDC9D600} - C:\Program Files (x86)\Windows Live\Writer\WriterBrowserExtension.dll
O9 - Extra 'Tools' menuitem: @C:\Program Files (x86)\Windows Live\Writer\WindowsLiveWriterShortcuts.dll,-1003 - {219C3416-8CB2-491a-A3C7-D9FCDDC9D600} - C:\Program Files (x86)\Windows Live\Writer\WriterBrowserExtension.dll
O9 - Extra button: Research - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~2\MICROS~3\Office12\REFIEBAR.DLL
O15 - Trusted Zone: http://*.wedisk.co.kr
O15 - Trusted Zone: http://*.wedisk.net
O17 - HKLM\System\CCS\Services\Tcpip\..\{7E0BF0F3-2EB3-4AD7-8B6C-DDFD47A93246}: Domain = vic.bigpond.net.au
O17 - HKLM\System\CCS\Services\Tcpip\..\{CABB765F-C11D-47A7-A7BF-30FA623A3EAB}: Domain = vic.bigpond.net.au
O18 - Protocol: wlpg - {E43EF6CD-A37A-4A9B-9E6F-83F89B8E6324} - C:\Program Files (x86)\Windows Live\Photo Gallery\AlbumDownloadProtocolHandler.dll
O22 - SharedTaskScheduler: Component Categories cache daemon - {8C7461EF-2B13-11d2-BE35-3078302C2030} - C:\Windows\system32\browseui.dll
O23 - Service: Adobe Version Cue CS3 - Adobe Systems Incorporated - C:\Program Files (x86)\Common Files\Adobe\Adobe Version Cue CS3\Server\bin\VersionCueCS3.exe
O23 - Service: @%SystemRoot%\system32\Alg.exe,-112 (ALG) - Unknown owner - C:\Windows\System32\alg.exe (file missing)
O23 - Service: Avira AntiVir Scheduler (AntiVirSchedulerService) - Avira GmbH - C:\Program Files (x86)\Avira\AntiVir Desktop\sched.exe
O23 - Service: Avira AntiVir Guard (AntiVirService) - Avira GmbH - C:\Program Files (x86)\Avira\AntiVir Desktop\avguard.exe
O23 - Service: Apple Mobile Device - Apple Inc. - C:\Program Files (x86)\Common Files\Apple\Mobile Device Support\AppleMobileDeviceService.exe
O23 - Service: ASP.NET State Service (aspnet_state) - Unknown owner - C:\Windows\Microsoft.NET\Framework\v2.0.50727\aspnet_state.exe (file missing)
O23 - Service: Bonjour Service - Apple Inc. - C:\Program Files (x86)\Bonjour\mDNSResponder.exe
O23 - Service: @dfsrres.dll,-101 (DFSR) - Unknown owner - C:\Windows\system32\DFSR.exe (file missing)
O23 - Service: @%systemroot%\system32\fxsresm.dll,-118 (Fax) - Unknown owner - C:\Windows\system32\fxssvc.exe (file missing)
O23 - Service: FLEXnet Licensing Service - Macrovision Europe Ltd. - C:\Program Files (x86)\Common Files\Macrovision Shared\FLEXnet Publisher\FNPLicensingService.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: @comres.dll,-2797 (MSDTC) - Unknown owner - C:\Windows\System32\msdtc.exe (file missing)
O23 - Service: @%SystemRoot%\System32\netlogon.dll,-102 (Netlogon) - Unknown owner - C:\Windows\system32\lsass.exe (file missing)
O23 - Service: NVIDIA Performance Driver Service - Unknown owner - C:\Program Files\NVIDIA Corporation\Performance Drivers\nvPDsvc.exe
O23 - Service: NVIDIA Display Driver Service (nvsvc) - Unknown owner - C:\Windows\system32\nvvsvc.exe (file missing)
O23 - Service: @%systemroot%\system32\psbase.dll,-300 (ProtectedStorage) - 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\SLsvc.exe,-101 (slsvc) - Unknown owner - C:\Windows\system32\SLsvc.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\ui0detect.exe,-101 (UI0Detect) - Unknown owner - C:\Windows\system32\UI0Detect.exe (file missing)
O23 - Service: VAIO Event Service - Sony Corporation - C:\Program Files (x86)\Sony\VAIO Event Service\VESMgr.exe
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: VUAgent - Sony Corporation - C:\Program Files\Sony\VAIO Update 5\VUAgent.exe
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)
O23 - Service: Yahoo! Updater (YahooAUService) - Yahoo! Inc. - C:\Program Files (x86)\Yahoo!\SoftwareUpdate\YahooAUService.exe

as you can see theres alot of (file missing) in the log, I wonder what happened to these files..I have also run a virus scan and returned back clean.

Component Details Subscore Base score Processor Intel(R) Core(TM)2 Duo CPU T7500 @ 2.20GHz 4.4
1.0 Determined by lowest subscore
Memory (RAM) 2.00 GB 4.6
Graphics NVIDIA GeForce 8400M GT 1.0
Gaming graphics 1023 MB Total available graphics memory 1.0
Primary hard disk 744GB Free (932GB Total) 5.9
Windows Vista (TM) Ultimate
System Manufacturer Sony Corporation Model VGC-LT19U Total amount of system memory 2.00 GB RAM System type 64-bit operating system Number of processor cores 2 Storage Total size of hard disk(s) 932 GB Disk partition (C:744 GB Free (932 GB Total) Media drive (D:CD/DVD Graphics Display adapter type NVIDIA GeForce 8400M GT Total available graphics memory 1023 MB Dedicated graphics memory 256 MB Dedicated system memory 0 MB Shared system memory 767 MB Display adapter driver version 7.15.11.5655 Primary monitor resolution 1680x1050 DirectX version DirectX 8 or earlier Network Network Adapter Generic Marvell Yukon Chipset based Ethernet Controller Network Adapter Intel(R) Wireless WiFi Link 4965AGN Network Adapter Microsoft Tun Miniport Adapter

as you can see the PC detects the GPU but I dont understand why the base score is still 1.0? Hope anyone out there can help me out.

That's strange. A graphics WEI of 1.0 usually indicates that the system is using the generic VGA drivers.

I see that you have the Vista drivers from Sony installed. I'd expect those to work, although the DirectX8 business is worrying.

Can you install the latest drivers, directly form nVidia?

NVIDIA DRIVERS 266.58 WHQL

(You don't have a notebook, but your all-in-one desktop uses a mobile graphics controller.)

Thanks for the reply bobkn..I have updated to the latest direct x, and I have tried to install the latest drivers from nvidia as well...but ill have a go another time, with sweeping out all the old drivers first. again..Thanks heaps!

Thanks Fabe! I have managed to fix the problem!! thanks again guys..I did a full uninstall of the drivers and done a driver sweep for all nvidia files..also downloaded modded driver from a link given by tokioman from another thread..works well now! Thank god and thanks guys!