笔记本电脑，忽然上不了网，下面是扫描日志，请帮助分析一下：
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP2 (6.00.2900.2180)

Running processes:
C:\WINDOWS\System32\smss.exe
C:\WINDOWS\system32\csrss.exe
C:\WINDOWS\system32\winlogon.exe
C:\WINDOWS\system32\services.exe
C:\WINDOWS\system32\lsass.exe
C:\WINDOWS\system32\ibmpmsvc.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\system32\spoolsv.exe
C:\Program Files\ThinkPad\ConnectUtilities\AcPrfMgrSvc.exe
C:\Program Files\Network Associates\Common Framework\FrameworkService.exe
C:\Program Files\Network Associates\VirusScan\Mcshield.exe
C:\Program Files\Network Associates\VirusScan\VsTskMgr.exe
C:\WINDOWS\System32\QCONSVC.EXE
C:\PROGRA~1\NETWOR~1\COMMON~1\naPrdMgr.exe
C:\WINDOWS\system32\wdfmgr.exe
C:\Program Files\ThinkPad\ConnectUtilities\AcSvc.exe
C:\WINDOWS\system32\wbem\wmiprvse.exe
C:\WINDOWS\System32\alg.exe
C:\Program Files\ThinkPad\ConnectUtilities\SvcGuiHlpr.exe
C:\WINDOWS\Explorer.EXE
C:\WINDOWS\system32\Rundll32.exe
C:\Program Files\ThinkPad\ConnectUtilities\ACWLIcon.exe
C:\Program Files\ThinkPad\ConnectUtilities\QcTray.exe
C:\Program Files\ThinkPad\ConnectUtilities\QCWLICON.EXE
C:\PROGRA~1\Lenovo\PkgMgr\HOTKEY\TPHKMGR.exe
C:\Program Files\Common Files\Real\Update_OB\realsched.exe
C:\Program Files\Lenovo\PkgMgr\HOTKEY\TPONSCR.exe
C:\WINDOWS\system32\ctfmon.exe
C:\Program Files\IBM\Messages By IBM\ibmmessages.exe
C:\Program Files\Common Files\Real\Update_OB\rnathchk.exe
C:\Program Files\Digital Line Detect\DLG.exe
C:\Documents and Settings\new\桌面\扫描软件.exe

[用户系统信息]Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)

O2 - BHO: ThunderIEHelper - {0005A87D-D626-4B3A-84F9-1D9571695F55} - C:\Program Files\Thunder\xunleibho_v14.dll
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 7.0\ActiveX\AcroIEHelper.dll
O4 - HKLM\..\Run: [CnsMin] Rundll32.exe C:\WINDOWS\DOWNLO~1\CnsMin.dll,Rundll32
O4 - HKLM\..\Run: [igfxtray] C:\WINDOWS\system32\igfxtray.exe
O4 - HKLM\..\Run: [ACWLIcon] C:\Program Files\ThinkPad\ConnectUtilities\ACWLIcon.exe
O4 - HKLM\..\Run: [QCTray] C:\Program Files\ThinkPad\ConnectUtilities\QcTray.exe
O4 - HKLM\..\Run: [QCWLIcon] C:\Program Files\ThinkPad\ConnectUtilities\QCWLICON.EXE
O4 - HKLM\..\Run: [TPHOTKEY] C:\PROGRA~1\Lenovo\PkgMgr\HOTKEY\TPHKMGR.exe
O4 - HKLM\..\Run: [TkBellExe] "C:\Program Files\Common Files\Real\Update_OB\realsched.exe" -osboot
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [ibmmessages] C:\Program Files\IBM\Messages By IBM\ibmmessages.exe
O4 - Global Startup: Digital Line Detect.lnk = ?
O8 - Extra context menu item: 使用迅雷下载 - C:\Program Files\Thunder\geturl.htm
O8 - Extra context menu item: 使用迅雷下载全部链接 - C:\Program Files\Thunder\getallurl.htm
O8 - Extra context menu item: 导出到 Microsoft Office Excel(&X) - res://C:\PROGRA~1\MICROS~2\OFFICE11\EXCEL.EXE/3000
O8 - Extra context menu item: 添加到QQ表情 - C:\Program Files\QQ2006\AddEmotion.htm
O8 - Extra context menu item: 添加到雅虎订阅(&Y) - res://C:\PROGRA~1\Yahoo!\ASSIST~1\Assist\yrss.dll/YRSSMENUEXT
O8 - Extra context menu item: 雅虎搜索 - res://C:\PROGRA~1\Yahoo!\ASSIST~1\Assist\yasbar.dll/246
O9 - Extra button: Yahoo 3.5G电邮 - {507F9113-CD77-4866-BA92-0E86DA3D0B97} - http://cn.zs.yahoo.com/cnsbutton.htm?source=cns&btn=yahoomail (file missing)
O9 - Extra button: 名品折扣 - {59BC54A2-56B3-44a0-93E5-432D58746E26} - http://adtaobao.allyes.com/main/adfclick?db=adtaobao&bid=138,140,18&cid=816,8,1&sid=5042&show=ignore&url=http://www.taobao.com/vertical/mall/pro.php?allyesPara=816 (file missing)
O9 - Extra button: 雅虎助手 - {5D73EE86-05F1-49ed-B850-E423120EC338} - http://cn.zs.yahoo.com/cnsbutton.htm?source=cns&btn=yassist (file missing)
O9 - Extra button: 微软 - {6096E38F-5AC1-4391-8EC4-75DFA92FB32F} - http://www.microsoft.com/china/index.htm (file missing)
O9 - Extra button: 雅虎WIDGET - {6354ABE6-05F1-49ed-B850-E423120EC338} - http://cn.widget.yahoo.com/index.htm?source=Cns (file missing)
O9 - Extra button: (no name) - {DEDEB80D-FA35-45d9-9460-4983E5A8AFE6} - C:\Program Files\QQ2006\QQIEHelper.dll (file missing)
O9 - Extra 'Tools' menuitem: QQ炫彩工具条设置 - {DEDEB80D-FA35-45d9-9460-4983E5A8AFE6} - C:\Program Files\QQ2006\QQIEHelper.dll (file missing)
O9 - Extra button: 情景聊天 - {E5D12C4E-7B4F-11D3-B5C9-0050045C3C96} - http://cn.zs.yahoo.com/cnsbutton.htm?source=cns&btn=yahoomsg (file missing)
O9 - Extra button: (no name) - {ECF2E268-F28C-48d2-9AB7-8F69C11CCB71} - http://cn.zs.yahoo.com/cnsbutton.htm?source=cns&btn=repair (file missing)
O9 - Extra 'Tools' menuitem: 修复浏览器 - {ECF2E268-F28C-48d2-9AB7-8F69C11CCB71} - http://cn.zs.yahoo.com/cnsbutton.htm?source=cns&btn=repair (file missing)
O9 - Extra button: (no name) - {FD00D911-7529-4084-9946-A29F1BDF4FE5} - http://cn.zs.yahoo.com/cnsbutton.htm?source=cns&btn=clean (file missing)
O9 - Extra 'Tools' menuitem: 清理上网记录 - {FD00D911-7529-4084-9946-A29F1BDF4FE5} - http://cn.zs.yahoo.com/cnsbutton.htm?source=cns&btn=clean (file missing)
O11 - Options group: [!CNS]  中文上网
O16 - DPF: {17492023-C23A-453E-A040-C7C580BBF700} (Windows Genuine Advantage Validation Tool) - http://go.microsoft.com/fwlink/?linkid=39204
O21 - SSODL: SysTime - {724C75F1-B757-408D-A50A-4CF99DA35D73} - C:\PROGRA~1\WinKld\WinKld.dll (file missing)
O23 - Service: Ac Profile Manager Service - Unknown - C:\Program Files\ThinkPad\ConnectUtilities\AcPrfMgrSvc.exe
O23 - Service: Access Connections Main Service - Lenovo - C:\Program Files\ThinkPad\ConnectUtilities\AcSvc.exe
O23 - Service: ThinkPad PM Service - Unknown - C:\WINDOWS\system32\ibmpmsvc.exe
O23 - Service: McAfee Framework 服务 - Network Associates, Inc. - C:\Program Files\Network Associates\Common Framework\FrameworkService.exe
O23 - Service: Network Associates McShield - Network Associates, Inc. - C:\Program Files\Network Associates\VirusScan\Mcshield.exe
O23 - Service: Network Associates Task Manager - Network Associates, Inc. - C:\Program Files\Network Associates\VirusScan\VsTskMgr.exe
O23 - Service: QCONSVC - Lenovo - C:\WINDOWS\System32\QCONSVC.EXE

ding

怎么都不理我啊~~~~~~~~~~~~~~`