Windows update not working and Google Search Engine takes me to random website

Hello

I recently bought a Dell laptop
Windows Vista Home Premium SP1
Inspiron 1525
and When i start it First time (uncovering the packing and opening the laptop) while starting it first time, it ask for many google products like Google desktop and google toolbar, and i selected yes. Then i face face many problems like

Problems::

1. Whenever i search anything on www.google.com and then click on results, it took me to the random page.

2. Unable to Update the WIndows vista

3. While checking for Windows defender update, it gives following error code - Code 0x80190194

4. McAfee installed in system by Dell which is not getting updated.It says "An error occurred while updating. Please reinstall these programs:
McAfee SecurityCenter"
Am unable to download the MsAfee from website. It says Page cant be displayed.

5. Microsoft Updates - Not working

Link - http://update.microsoft.com/windowsupdate/v6/default.aspx -- ERROR (Server Error in '/' Application.)
Link - http://windowsupdate.microsoft.com/ -- Windows update didnt worked and www.msn.com opens.

I installed Malwarebytes' Anti-Malware and it Detects (DNS Changer)and removes it, and when i again connect to the network (Switch On the WIFI Switch - which connects me to the internet) it again came.

I tried unstalling all the products but nothing happes, i still face same problem.

The HiJack Logs are as follows: ------

Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 19:03:17, on 30/12/2008
Platform: Windows Vista SP1 (WinNT 6.00.1905)
MSIE: Internet Explorer v7.00 (7.00.6001.18000)
Boot mode: Normal

Running processes:
c:\PROGRA~1\mcafee.com\agent\mcagent.exe
C:\Windows\system32\taskeng.exe
C:\Windows\system32\Dwm.exe
C:\Windows\Explorer.EXE
C:\Program Files\Windows Defender\MSASCui.exe
C:\Program Files\Dell\DellDock\DellDock.exe
C:\Program Files\DellTPad\Apoint.exe
C:\Windows\OEM02Mon.exe
C:\Windows\System32\igfxtray.exe
C:\Windows\System32\hkcmd.exe
C:\Windows\System32\igfxpers.exe
C:\Program Files\Intel\Intel Matrix Storage Manager\IAAnotif.exe
C:\Windows\System32\WLTRAY.EXE
C:\Program Files\Dell\MediaDirect\PCMService.exe
C:\Program Files\Dell DataSafe Online\DataSafeOnline.exe
C:\Program Files\Dell Support Center\bin\sprtcmd.exe
C:\Windows\system32\igfxsrvc.exe
C:\Program Files\Java\jre6\bin\jusched.exe
C:\Program Files\Common Files\Real\Update_OB\realsched.exe
C:\Users\Yash\AppData\Roaming\Google\Google Talk\googletalk.exe
C:\Program Files\FreeCall.com\FreeCall\FreeCall.exe
C:\Program Files\Google\GoogleToolbarNotifier\GoogleToolbarNotifier.exe
C:\Program Files\Windows Media Player\wmpnscfg.exe
C:\Program Files\WIDCOMM\Bluetooth Software\BTTray.exe
C:\Program Files\Digital Line Detect\DLG.exe
C:\Program Files\Dell\QuickSet\quickset.exe
C:\Program Files\WordWeb\wweb32.exe
C:\Program Files\DellTPad\ApMsgFwd.exe
C:\Program Files\DellTPad\Apntex.exe
C:\Program Files\DellTPad\HidFind.exe
C:\Program Files\Yahoo!\Messenger\ymsgr_tray.exe
c:\PROGRA~1\mcafee\msc\mcuimgr.exe
C:\Windows\system32\NOTEPAD.EXE
C:\Program Files\Internet Explorer\ieuser.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\Program Files\Google\Google Toolbar\GoogleToolbarUser.exe
C:\Windows\system32\Macromed\Flash\FlashUtil10a.exe
C:\Program Files\Dell Support Center\gs_agent\dsc.exe
C:\Windows\System32\notepad.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\Windows\system32\SearchFilterHost.exe
C:\Program Files\Trend Micro\HijackThis\HijackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://www.google.co.uk/ig/dell?hl=en&client=dell-usuk&channel=uk&ibd=3081217
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = about:blank
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://go.microsoft.com/fwlink/?LinkId=69157
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/?LinkId=69157
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant =
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,CustomizeSearch =
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Window Title = Internet Explorer provided by Dell
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName =
O1 - Hosts: ::1 localhost
O2 - BHO: AcroIEHelperStub - {18DF081C-E8AD-4283-A596-FA578C2EBDC3} - c:\Program Files\Common Files\Adobe\Acrobat\ActiveX\AcroIEHelperShim.dll
O2 - BHO: RealPlayer Download and Record Plugin for Internet Explorer - {3049C3E9-B461-4BC5-8870-4C09146192CA} - C:\Program Files\Real\RealPlayer\rpbrowserrecordplugin.dll
O2 - BHO: McAntiPhishingBHO - {377C180E-6F0E-4D4C-980F-F45BD3D40CF4} - c:\PROGRA~1\mcafee\msk\mcapbho.dll
O2 - BHO: Java(tm) Plug-In SSV Helper - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Program Files\Java\jre6\bin\ssv.dll
O2 - BHO: scriptproxy - {7DB2D5A0-7241-4E79-B68D-6309F01C5231} - C:\Program Files\McAfee\VirusScan\scriptsn.dll
O2 - BHO: Google Toolbar Helper - {AA58ED58-01DD-4d91-8333-CF10577473F7} - C:\Program Files\Google\Google Toolbar\GoogleToolbar.dll
O2 - BHO: Google Toolbar Notifier BHO - {AF69DE43-7D58-4638-B6FA-CE66B5AD205D} - C:\Program Files\Google\GoogleToolbarNotifier\5.0.926.3450\swg.dll
O2 - BHO: Google Dictionary Compression sdch - {C84D72FE-E17D-4195-BB24-76C02E2E7C4E} - C:\Program Files\Google\Google Toolbar\Component\fastsearch_219B3E1547538286.dll
O2 - BHO: Browser Address Error Redirector - {CA6319C0-31B7-401E-A518-A07C3DB8F777} - C:\Program Files\Dell\BAE\BAE.dll
O2 - BHO: Java(tm) Plug-In 2 SSV Helper - {DBC80044-A445-435b-BC74-9C25C1C588A9} - C:\Program Files\Java\jre6\bin\jp2ssv.dll
O3 - Toolbar: &Google Toolbar - {2318C2B1-4965-11d4-9B18-009027A5CD4F} - C:\Program Files\Google\Google Toolbar\GoogleToolbar.dll
O4 - HKLM\..\Run: [Windows Defender] "C:\Program Files\Windows Defender\MSASCui.exe" -hide
O4 - HKLM\..\Run: [Apoint] "C:\Program Files\DellTPad\Apoint.exe"
O4 - HKLM\..\Run: [OEM02Mon.exe] "C:\Windows\OEM02Mon.exe"
O4 - HKLM\..\Run: [IgfxTray] "C:\Windows\system32\igfxtray.exe"
O4 - HKLM\..\Run: [HotKeysCmds] "C:\Windows\system32\hkcmd.exe"
O4 - HKLM\..\Run: [Persistence] "C:\Windows\system32\igfxpers.exe"
O4 - HKLM\..\Run: [IAAnotif] "C:\Program Files\Intel\Intel Matrix Storage Manager\Iaanotif.exe"
O4 - HKLM\..\Run: [Broadcom Wireless Manager UI] "C:\Windows\system32\WLTRAY.exe"
O4 - HKLM\..\Run: [Adobe Reader Speed Launcher] "c:\Program Files\Adobe\Reader 9.0\Reader\Reader_sl.exe"
O4 - HKLM\..\Run: [mcagent_exe] "C:\Program Files\McAfee.com\Agent\mcagent.exe" /runkey
O4 - HKLM\..\Run: [PCMService] "C:\Program Files\Dell\MediaDirect\PCMService.exe"
O4 - HKLM\..\Run: [Dell DataSafe Online] "C:\Program Files\Dell DataSafe Online\DataSafeOnline.exe" /m
O4 - HKLM\..\Run: [dellsupportcenter] "C:\Program Files\Dell Support Center\bin\sprtcmd.exe" /P dellsupportcenter
O4 - HKLM\..\Run: [SunJavaUpdateSched] "C:\Program Files\Java\jre6\bin\jusched.exe"
O4 - HKLM\..\Run: [TkBellExe] "C:\Program Files\Common Files\Real\Update_OB\realsched.exe" -osboot
O4 - HKCU\..\Run: [googletalk] "C:\Users\Yash\AppData\Roaming\Google\Google Talk\googletalk.exe" /autostart
O4 - HKCU\..\Run: [FreeCall] "C:\Program Files\FreeCall.com\FreeCall\FreeCall.exe" -nosplash -minimized
O4 - HKCU\..\Run: [Messenger (Yahoo!)] "C:\Program Files\Yahoo!\Messenger\YahooMessenger.exe" -quiet
O4 - HKCU\..\Run: [swg] C:\Program Files\Google\GoogleToolbarNotifier\GoogleToolbarNotifier.exe
O4 - HKCU\..\Run: [WMPNSCFG] "C:\Program Files\Windows Media Player\WMPNSCFG.exe"
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')
O4 - Startup: Dell Dock.lnk = C:\Program Files\Dell\DellDock\DellDock.exe
O4 - Startup: WordWeb.lnk = C:\Program Files\WordWeb\wweb32.exe
O4 - Global Startup: Bluetooth.lnk = ?
O4 - Global Startup: Digital Line Detect.lnk = C:\Program Files\Digital Line Detect\DLG.exe
O4 - Global Startup: QuickSet.lnk = C:\Program Files\Dell\QuickSet\quickset.exe
O8 - Extra context menu item: Add to Google Photos Screensa&ver - res://C:\Windows\system32\GPhotos.scr/200
O8 - Extra context menu item: Send image to &Bluetooth Device... - c:\Program Files\WIDCOMM\Bluetooth Software\btsendto_ie_ctx.htm
O8 - Extra context menu item: Send page to &Bluetooth Device... - c:\Program Files\WIDCOMM\Bluetooth Software\btsendto_ie.htm
O9 - Extra button: @btrez.dll,-4015 - {CCA281CA-C863-46ef-9331-5C8D4460577F} - c:\Program Files\WIDCOMM\Bluetooth Software\btsendto_ie.htm
O9 - Extra 'Tools' menuitem: @btrez.dll,-12650 - {CCA281CA-C863-46ef-9331-5C8D4460577F} - c:\Program Files\WIDCOMM\Bluetooth Software\btsendto_ie.htm
O13 - Gopher Prefix:
O16 - DPF: {8AD9C840-044E-11D1-B3E9-00805F499D93} (Java Plug-in 1.6.0_11) - http://dl8-cdn-01.sun.com/s/ESD5/JSCDL/jre/6u11-b90/jinstall-6u11-windows-i586-jc.cab?e=1230593313069&h=3de6344adf6d9b4a0ef7121ab1b76785/&filename=jinstall-6u11-windows-i586-jc.cab
O20 - Winlogon Notify: GoToAssist - C:\Program Files\Citrix\GoToAssist\514\G2AWinLogon.dll
O23 - Service: Andrea ST Filters Service (AESTFilters) - Andrea Electronics Corporation - C:\Windows\system32\aestsrv.exe
O23 - Service: Dock Login Service (DockLoginService) - Stardock Corporation - C:\Program Files\Dell\DellDock\DockLogin.exe
O23 - Service: GoToAssist - Citrix Online, a division of Citrix Systems, Inc. - C:\Program Files\Citrix\GoToAssist\514\g2aservice.exe
O23 - Service: Google Updater Service (gusvc) - Google - C:\Program Files\Google\Common\Google Updater\GoogleUpdaterService.exe
O23 - Service: Intel(R) Matrix Storage Event Monitor (IAANTMON) - Intel Corporation - C:\Program Files\Intel\Intel Matrix Storage Manager\Iaantmon.exe
O23 - Service: McAfee Services (mcmscsvc) - McAfee, Inc. - C:\PROGRA~1\McAfee\MSC\mcmscsvc.exe
O23 - Service: McAfee Network Agent (McNASvc) - McAfee, Inc. - c:\PROGRA~1\COMMON~1\mcafee\mna\mcnasvc.exe
O23 - Service: McAfee Scanner (McODS) - McAfee, Inc. - C:\PROGRA~1\McAfee\VIRUSS~1\mcods.exe
O23 - Service: McAfee Proxy Service (McProxy) - McAfee, Inc. - c:\PROGRA~1\COMMON~1\mcafee\mcproxy\mcproxy.exe
O23 - Service: McAfee Real-time Scanner (McShield) - McAfee, Inc. - C:\PROGRA~1\McAfee\VIRUSS~1\mcshield.exe
O23 - Service: McAfee SystemGuards (McSysmon) - McAfee, Inc. - C:\PROGRA~1\McAfee\VIRUSS~1\mcsysmon.exe
O23 - Service: McAfee Personal Firewall Service (MpfService) - McAfee, Inc. - C:\Program Files\McAfee\MPF\MPFSrv.exe
O23 - Service: McAfee Anti-Spam Service (MSK80Service) - McAfee, Inc. - C:\Program Files\McAfee\MSK\MskSrver.exe
O23 - Service: SupportSoft Sprocket Service (DellSupportCenter) (sprtsvc_DellSupportCenter) - SupportSoft, Inc. - C:\Program Files\Dell Support Center\bin\sprtsvc.exe
O23 - Service: SigmaTel Audio Service (STacSV) - IDT, Inc. - C:\Windows\system32\STacSV.exe
O23 - Service: stllssvr - MicroVision Development, Inc. - C:\Program Files\Common Files\SureThing Shared\stllssvr.exe
O23 - Service: Dell Wireless WLAN Tray Service (wltrysvc) - Unknown owner - C:\Windows\System32\WLTRYSVC.EXE
O23 - Service: XAudioService - Conexant Systems, Inc. - C:\Windows\system32\DRIVERS\xaudio.exe

--
End of file - 10286 bytes

Let me know if you need any more information.

Yash