Please help, just this morning I find out PC was shut down, which was left turn on the night before. When I turned it on, can not find start button and taskbar. Screen saver is still there, no desktop files/folders though, can not click or right click anywhere. Try ctrl+alt+delete and run explorer.exe, didn't do nothing. When I run microsoft outlook, it's pulling hundreds of emails so I have to stopped it and shut down PC. Run Hijackthis, log as below:
Logfile of HijackThis v1.99.1
Scan saved at 10:02:40 AM, on 6/19/2007
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v7.00 (7.00.6000.16414)

Running processes:
C:\WINDOWS\System32\smss.exe
C:\WINDOWS\system32\winlogon.exe
C:\WINDOWS\system32\services.exe
C:\WINDOWS\system32\lsass.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\system32\spoolsv.exe
C:\Program Files\ewido anti-spyware 4.0\guard.exe
C:\Program Files\Common Files\Microsoft Shared\VS7DEBUG\MDM.EXE
C:\Program Files\Microsoft SQL Server\MSSQL$VAIO_VEDB\Binn\sqlservr.exe
C:\Program Files\Adobe\Photoshop Elements 3.0\PhotoshopElementsDeviceConnect.exe
C:\WINDOWS\system32\taskmgr.exe
C:\WINDOWS\system32\ctfmon.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\Messenger\msmsgs.exe
C:\Hijackthis\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.blessingautomarket.com/
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://www.yahoo.com
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://www.yahoo.com
R1 - HKCU\Software\Microsoft\Internet Connection Wizard,ShellNext = http://www.sony.com/vaiopeople
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Window Title = Windows Internet Explorer provided by Yahoo!
R3 - URLSearchHook: Yahoo! Toolbar - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - (no file)
O2 - BHO: Adobe PDF Reader Link Helper - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 7.0\ActiveX\AcroIEHelper.dll
O2 - BHO: SSVHelper Class - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Program Files\Java\jre1.5.0_10\bin\ssv.dll
O2 - BHO: Google Toolbar Helper - {AA58ED58-01DD-4d91-8333-CF10577473F7} - c:\program files\google\googletoolbar3.dll
O2 - BHO: AcroIEToolbarHelper Class - {AE7CD045-E861-484f-8273-0445EE161910} - C:\Program Files\Adobe\Acrobat 6.0\Acrobat\AcroIEFavClient.dll
O3 - Toolbar: Adobe PDF - {47833539-D0C5-4125-9FA8-0819E2EAAC93} - C:\Program Files\Adobe\Acrobat 6.0\Acrobat\AcroIEFavClient.dll
O3 - Toolbar: &Google - {2318C2B1-4965-11d4-9B18-009027A5CD4F} - c:\program files\google\googletoolbar3.dll
O4 - HKLM\..\Run: [ATIPTA] C:\Program Files\ATI Technologies\ATI Control Panel\atiptaxx.exe
O4 - HKLM\..\Run: [AGRSMMSG] AGRSMMSG.exe
O4 - HKLM\..\Run: [High Definition Audio Property Page Shortcut] HDAudPropShortcut.exe
O4 - HKLM\..\Run: [SoundMan] SOUNDMAN.EXE
O4 - HKLM\..\Run: [AlcWzrd] ALCWZRD.EXE
O4 - HKLM\..\Run: [Alcmtr] ALCMTR.EXE
O4 - HKLM\..\Run: [IgfxTray] C:\WINDOWS\system32\igfxtray.exe
O4 - HKLM\..\Run: [HotKeysCmds] C:\WINDOWS\system32\hkcmd.exe
O4 - HKLM\..\Run: [VAIO Update 2] "C:\Program Files\Sony\VAIO Update 2\VAIOUpdt.exe" /Stationary
O4 - HKLM\..\Run: [VZRemoteCommander] C:\Program Files\Sony\VAIO Zone Remote Commander\AvRmtCtr.exe
O4 - HKLM\..\Run: [SunJavaUpdateSched] "C:\Program Files\Java\jre1.5.0_10\bin\jusched.exe"
O4 - HKLM\..\Run: [SsAAD.exe] C:\PROGRA~1\sony\SONICS~1\SsAAD.exe
O4 - HKLM\..\Run: [NeroFilterCheck] C:\WINDOWS\system32\NeroCheck.exe
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\qttask.exe" -atboottime
O4 - HKLM\..\Run: [WD Button Manager] WDBtnMgr.exe
O4 - HKLM\..\Run: [gcasServ] "C:\Program Files\Microsoft AntiSpyware\gcasServ.exe"
O4 - HKCU\..\Run: [MSMSGS] "C:\Program Files\Messenger\msmsgs.exe" /background
O4 - HKCU\..\Run: [swg] C:\Program Files\Google\GoogleToolbarNotifier\1.0.720.3640\GoogleToolbarNotifier.exe
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [updateMgr] C:\Program Files\Adobe\Acrobat 7.0\Reader\AdobeUpdateManager.exe AcRdB7_0_9
O4 - HKCU\..\Run: [Google Desktop Search] "C:\Program Files\Google\Google Desktop Search\GoogleDesktop.exe" /startup
O4 - HKCU\..\Run: [H/PC Connection Agent] "C:\Program Files\Microsoft ActiveSync\wcescomm.exe"
O4 - HKCU\..\RunOnce: [SWHelper] "C:\WINDOWS\system32\Macromed\Shockwave 10\PostUpdate.exe" 1010011
O4 - Startup: palmOne Registration.lnk = C:\Program Files\palmOne\register.exe
O4 - Global Startup: Acrobat Assistant.lnk = C:\Program Files\Adobe\Acrobat 6.0\Distillr\acrotray.exe
O4 - Global Startup: Adobe Reader Speed Launch.lnk = C:\Program Files\Adobe\Acrobat 7.0\Reader\reader_sl.exe
O4 - Global Startup: DataViz Inc Messenger.lnk = C:\Program Files\Common Files\DataViz\DvzIncMsgr.exe
O4 - Global Startup: hamachi.lnk = C:\Program Files\Hamachi\hamachi.exe
O4 - Global Startup: HotSync Manager.lnk = C:\Program Files\palmOne\Hotsync.exe
O4 - Global Startup: QuickBooks Update Agent.lnk = C:\Program Files\Common Files\Intuit\QuickBooks\QBUpdate\qbupdate.exe
O4 - Global Startup: WD Backup Monitor.lnk = C:\Program Files\My Book\WD Backup\uBBMonitor.exe
O8 - Extra context menu item: E&xport to Microsoft Excel - res://C:\PROGRA~1\MICROS~3\OFFICE11\EXCEL.EXE/3000
O8 - Extra context menu item: Transfer by Image Converter 2 - C:\Program Files\Sony\Image Converter 2\menu.htm
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.5.0_10\bin\ssv.dll
O9 - Extra 'Tools' menuitem: Sun Java Console - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.5.0_10\bin\ssv.dll
O9 - Extra button: Create Mobile Favorite - {2EAF5BB1-070F-11D3-9307-00C04FAE2D4F} - C:\PROGRA~1\MICROS~4\INetRepl.dll
O9 - Extra button: (no name) - {2EAF5BB2-070F-11D3-9307-00C04FAE2D4F} - C:\PROGRA~1\MICROS~4\INetRepl.dll
O9 - Extra 'Tools' menuitem: Create Mobile Favorite… - {2EAF5BB2-070F-11D3-9307-00C04FAE2D4F} - C:\PROGRA~1\MICROS~4\INetRepl.dll
O9 - Extra button: Research - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~3\OFFICE11\REFIEBAR.DLL
O9 - Extra button: (no name) - {e2e2dd38-d088-4134-82b7-f2ba38496583} - %windir%\Network Diagnostic\xpnetdiag.exe (file missing)
O9 - Extra 'Tools' menuitem: @xpsp3res.dll,-20001 - {e2e2dd38-d088-4134-82b7-f2ba38496583} - %windir%\Network Diagnostic\xpnetdiag.exe (file missing)
O9 - Extra button: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\msmsgs.exe
O9 - Extra 'Tools' menuitem: Windows Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\msmsgs.exe
O11 - Options group: [INTERNATIONAL] International*
O14 - IERESET.INF: START_PAGE_URL=http://www.sony.com/vaiopeople
O16 - DPF: {02CF1781-EA91-4FA5-A200-646E8241987C} (VaioInfo.CMClass) - http://esupport.sony.com/VaioInfo.CAB
O16 - DPF: {17492023-C23A-453E-A040-C7C580BBF700} (Windows Genuine Advantage Validation Tool) - http://go.microsoft.com/fwlink/?linkid=39204
O16 - DPF: {3D19135C-6D38-44AD-80F0-D9318F48726D} (BwOutlook.OutlookIntegrator) - http://appserver.dca.broadvoice.com/commpi…s/BwOutlook.CAB
O16 - DPF: {A8F2B9BD-A6A0-486A-9744-18920D898429} (ScorchPlugin Class) - http://www.sibelius.com/download/software/…tiveXPlugin.cab
O16 - DPF: {D27CDB6E-AE6D-11CF-96B8-444553540000} (Shockwave Flash Object) - http://fpdownload2.macromedia.com/get/shoc…ash/swflash.cab
O20 - Winlogon Notify: igfxcui - C:\WINDOWS\SYSTEM32\igfxsrvc.dll
O20 - Winlogon Notify: WgaLogon - C:\WINDOWS\SYSTEM32\WgaLogon.dll
O21 - SSODL: WPDShServiceObj - {AAA288BA-9A4C-45B0-95D7-94D524869DB5} - C:\WINDOWS\system32\WPDShServiceObj.dll
O23 - Service: Adobe Active File Monitor (AdobeActiveFileMonitor) - Unknown owner - C:\Program Files\Adobe\Photoshop Elements 3.0\PhotoshopElementsFileAgent.exe
O23 - Service: ewido anti-spyware 4.0 guard - Anti-Malware Development a.s. - C:\Program Files\ewido anti-spyware 4.0\guard.exe
O23 - Service: GoogleDesktopManager - Unknown owner - C:\Program Files\Google\Google Desktop Search\GoogleDesktop.exe (file missing)
O23 - Service: Image Converter video recording monitor for VAIO Entertainment - Sony Corporation - C:\Program Files\Sony\Image Converter 2\IcVzMon.exe
O23 - Service: MSCSPTISRV - Sony Corporation - C:\Program Files\Common Files\Sony Shared\AVLib\MSCSPTISRV.exe
O23 - Service: PACSPTISVR - Sony Corporation - C:\Program Files\Common Files\Sony Shared\AVLib\PACSPTISVR.exe
O23 - Service: Photoshop Elements Device Connect (PhotoshopElementsDeviceConnect) - Unknown owner - C:\Program Files\Adobe\Photoshop Elements 3.0\PhotoshopElementsDeviceConnect.exe
O23 - Service: Sony SPTI Service (SPTISRV) - Sony Corporation - C:\Program Files\Common Files\Sony Shared\AVLib\SPTISRV.exe
O23 - Service: SonicStage SCSI Service (SSScsiSV) - Sony Corporation - C:\Program Files\Common Files\Sony Shared\AVLib\SSScsiSV.exe
O23 - Service: VAIO Entertainment Aggregation and Control Service - Sony Corporation - C:\Program Files\Common Files\Sony Shared\VAIO Entertainment\VzRs\VzRs.exe
O23 - Service: VAIO Entertainment Task Scheduler - Sony Corporation - C:\Program Files\Sony\vaio entertainment\VzTaskScheduler.exe
O23 - Service: VAIO Entertainment TV Device Arbitration Service - Sony Corporation - C:\Program Files\Common Files\Sony Shared\VAIO Entertainment Platform\VzCs\VzHardwareResourceManager\VzHardwareResourceManager.exe
O23 - Service: VAIO Media Integrated Server (VAIOMediaPlatform-IntegratedServer-AppServer) - Sony Corporation - C:\Program Files\Sony\VAIO Media Integrated Server\VMISrv.exe
O23 - Service: VAIO Media Integrated Server (HTTP) (VAIOMediaPlatform-IntegratedServer-HTTP) - Unknown owner - C:\Program Files\Sony\VAIO Media Integrated Server\Platform\SV_Httpd.exe" /Service=VAIOMediaPlatform-IntegratedServer-HTTP /RegRoot="SOFTWARE\Sony Corporation\VAIO Media Platform\2.0" /RegExt="Applications\IntegratedServer\HTTP (file missing)
O23 - Service: VAIO Media Integrated Server (UPnP) (VAIOMediaPlatform-IntegratedServer-UPnP) - Sony Corporation - C:\Program Files\Sony\VAIO Media Integrated Server\Platform\UPnPFramework.exe
O23 - Service: VAIO Media Gateway Server (VAIOMediaPlatform-Mobile-Gateway) - Unknown owner - C:\Program Files\Sony\VAIO Media Integrated Server\Platform\VmGateway.exe" /Service=VAIOMediaPlatform-Mobile-Gateway /RegRoot="SOFTWARE\Sony Corporation\VAIO Media Platform\2.0" /RegExt="\Addons\Packages\Mobile\Gateway" /DisplayName="VAIO Media Gateway Server (file missing)
O23 - Service: VAIO Entertainment UPnP Client Adapter (Vcsw) - Sony Corporation - C:\Program Files\Common Files\Sony Shared\VAIO Entertainment Platform\VCSW\VCSW.exe
O23 - Service: TrueVector Internet Monitor (vsmon) - Zone Labs, LLC - C:\WINDOWS\system32\ZoneLabs\vsmon.exe
O23 - Service: VAIO Entertainment Database Service (VzCdbSvc) - Sony Corporation - C:\Program Files\Common Files\Sony Shared\VAIO Entertainment Platform\VzCdb\VzCdbSvc.exe
O23 - Service: VAIO Entertainment File Import Service (VzFw) - Sony Corporation - C:\Program Files\Common Files\Sony Shared\VAIO Entertainment Platform\VzCdb\VzFw.exe

Your help will be really appreciated. Thanks in advance.