我的机子桌面上的所有图标（包括我的电脑之类的）突然消失了，一片空白。。。。。。设置了也没有用。而且一关闭网页就会出现错误，这是怎么回事啊？而且机子变的超慢。。以下是扫描日志，请高手帮忙分析下：
Logfile of HijackThis v1.99.1
Scan saved at 12:03:03, on 2006-2-22
Platform: Windows XP SP2, v.2622 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP2 (6.00.2900.2180)
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\svchost.exe
C:\KAV2005\KWatch.EXE
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\Explorer.EXE
C:\WINDOWS\system32\RUNDLL32.exe
C:\KAV2005\KAVStart.exe
C:\Program Files\Common Files\Real\Update_OB\realsched.exe
C:\Documents and Settings\lihuazhang\桌面\Maxthon\Thundermini\ThunderMini.exe
C:\WINDOWS\system32\ctfmon.exe
C:\KAV2005\KPFW32.EXE
C:\KAV2005\KMailMon.EXE
C:\KAV2005\KPfwSvc.EXE
C:\WINDOWS\system32\svchost.exe
C:\Program Files\Common Files\SAND\qqfacerclient.exe
D:\802.1x客户端\Dot1xClient.exe
C:\WINDOWS\system32\wuauclt.exe
C:\WINDOWS\system32\WISPTIS.EXE
D:\ie修复\HijackThis.exe
D:\QQ\tt\TTraveler.exe
C:\WINDOWS\system32\notepad.exe
R3 - URLSearchHook: bho Class - {ED8DFC5C-10EF-45AB-9DC2-0639AFF5A270} - C:\PROGRA~1\COMMON~1\Wnwb\wnwbio.dll
O2 - BHO: ThunderIEHelper Class - {0005A87D-D626-4B3A-84F9-1D9571695F55} - C:\WINDOWS\system32\xunleibho_v5.dll
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 6.0\Reader\ActiveX\AcroIEHelper.dll
O2 - BHO: Tencent Browser Helper - {0C7C23EF-A848-485B-873C-0ED954731014} - C:\Program Files\TENCENT\AdPlus\IEHelp1.dll
O2 - BHO: EyeOnBrowser Class - {1272F701-349D-4DB3-BBCD-10CBDCD049FE} - C:\WINDOWS\Downlo~1\_IS_0518\_IS_WEBH.dll
O2 - BHO: KOSIE HelperInternet Explorer Web Content Guard - {1B2F92A1-CDAF-4511-9382-91E3F5CE0880} - C:\Program Files\KOS\KOSIEBar.dll
O2 - BHO: yPhtb - {33BBE430-0E42-4f12-B075-8D21ACB10DCB} - C:\PROGRA~1\Yahoo!\ASSIST~1\assist\yphtb.dll (file missing)
O2 - BHO: QQIEHelper - {54EBD53A-9BC1-480B-966A-843A333CA162} - D:\QQ\QQIEHelper.dll
O2 - BHO: YDragSearch - {62EED7C6-9F02-42f9-B634-98E2899E147B} - C:\PROGRA~1\Yahoo!\ASSIST~1\assist\YDRAGS~1.DLL (file missing)
O2 - BHO: update wnwb - {ED8DFC5C-10EF-45AB-9DC2-0639AFF5A270} - C:\PROGRA~1\COMMON~1\Wnwb\wnwbio.dll
O3 - Toolbar: BitCometBar - {3F1ABCDB-A875-46c1-8345-B72A4567E486} - D:\bit\BitComet\BitCometBar\BitCometBar0.3.dll
O3 - Toolbar: 金山快译(&K) - {6C3797D2-3FEF-4cd4-B654-D3AE55B4128C} - D:\英语\金山词霸 2005\金山快译 2005 专业版\IEBand.dll (file missing)
O3 - Toolbar: 金山毒霸安全助手 - {EF72500A-C234-46C4-BF0A-9AA6913DDF34} - C:\Program Files\KOS\KOSIEBar.dll
O4 - HKLM\..\Run: [advapi32] RUNDLL32 C:\WINDOWS\Downlo~1\_IS_0518\_IS_ISC.dll,isc
O4 - HKLM\..\Run: [KavStart] "C:\KAV2005\KAVStart.exe" -startup
O4 - HKLM\..\Run: [TkBellExe] "C:\Program Files\Common Files\Real\Update_OB\realsched.exe" -osboot
O4 - HKLM\..\Run: [AddrPlus3] C:\PROGRA~1\TENCENT\AdPlus\Runner.exe C:\PROGRA~1\TENCENT\AdPlus\QAHook1.dll Rundll32
O4 - HKLM\..\Run: [迅雷4] D:\xunlei\MediaIssue\TDUpdate.exe
O4 - HKLM\..\Run: [thunder_mini] C:\Documents and Settings\lihuazhang\桌面\Maxthon\Thundermini\ThunderMini.exe
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [KavPFW] "C:\KAV2005\KPFW32.EXE"
O8 - Extra context menu item: &使用迅雷下载 - D:\xunlei\geturl.htm
O8 - Extra context menu item: &使用迅雷下载全部链接 - D:\xunlei\getAllurl.htm
O8 - Extra context menu item: &使用迷你迅雷下载 - C:\Documents and Settings\lihuazhang\桌面\Maxthon\Thundermini\geturl.htm
O8 - Extra context menu item: 上传到QQ网络硬盘 - D:\QQ\AddToNetDisk.htm
O8 - Extra context menu item: 添加到QQ自定义面板 - D:\QQ\AddPanel.htm
O8 - Extra context menu item: 添加到QQ表情 - D:\QQ\AddEmotion.htm
O8 - Extra context menu item: 用QQ彩信发送该图片 - D:\QQ\SendMMS.htm
O9 - Extra button: 手机短信 - {00000000-0000-0001-0001-596BAEDD1289} - http://sms.3721.com/ie/index.htm?pid=81127_1006 (file missing)
O9 - Extra button: 免费精彩视频超流畅在线观看 - {022C4009-5283-4365-97BF-144054B40E2E} - http://itv.mop.com (file missing)
O9 - Extra 'Tools' menuitem: 播霸电视 - {022C4009-5283-4365-97BF-144054B40E2E} - http://itv.mop.com (file missing)
O9 - Extra button: 浩方对战平台 - {0A155D3C-68E2-4215-A47A-E800A446447A} - E:\浩方对战平台\GameClient.exe
O9 - Extra button: Yahoo 1G电邮 - {507F9113-CD77-4866-BA92-0E86DA3D0B97} - http://cn.mail.yahoo.com/promo/rd1 (file missing)
O9 - Extra button: 寻宝乐趣多 - {59BC54A2-56B3-44a0-93E5-432D58746E26} - http://hot.3721.com/rd/shop_btn.htm (file missing)
O9 - Extra button: 上网助手 - {5D73EE86-05F1-49ed-B850-E423120EC338} - http://assistant.3721.com/index.htm?fb=Cns (file missing)
O9 - Extra button: (no name) - {DEDEB80D-FA35-45d9-9460-4983E5A8AFE6} - D:\QQ\QQIEHelper.dll
O9 - Extra 'Tools' menuitem: QQ炫彩工具条设置 - {DEDEB80D-FA35-45d9-9460-4983E5A8AFE6} - D:\QQ\QQIEHelper.dll
O9 - Extra button: 情景聊天 - {E5D12C4E-7B4F-11D3-B5C9-0050045C3C96} - http://cn.rd.yahoo.com/home/messenger/bjk/clientbtn/?http://cn.messenger.yahoo.com/ (file missing)
O9 - Extra button: (no name) - {ECF2E268-F28C-48d2-9AB7-8F69C11CCB71} - http://assistant.3721.com/security1.htm?fb=Cns (file missing)
O9 - Extra 'Tools' menuitem: 修复浏览器 - {ECF2E268-F28C-48d2-9AB7-8F69C11CCB71} - http://assistant.3721.com/security1.htm?fb=Cns (file missing)
O9 - Extra button: (no name) - {FD00D911-7529-4084-9946-A29F1BDF4FE5} - http://assistant.3721.com/clean1.htm?fb=Cns (file missing)
O9 - Extra 'Tools' menuitem: 清理上网记录 - {FD00D911-7529-4084-9946-A29F1BDF4FE5} - http://assistant.3721.com/clean1.htm?fb=Cns (file missing)
O11 - Options group: [!CNS] 上网助手-地址栏搜索
O11 - Options group: [TBH] QQ地址栏搜索插件
O16 - DPF: {1663ed61-23eb-11d2-b92f-008048fdd814} (MeadCo ScriptX Basic) - http://service.beisen.com.cn/ScriptX.cab
O16 - DPF: {99410CDE-6F16-42ce-9D49-3807F78F0287} (ClientInstaller Class) - http://www.180searchassistant.com/180saax.cab
O16 - DPF: {FEE1002D-90A5-4A5D-AABE-01803FFBCF7A} (pCastPanel Class) - http://ps.itv.mop.com/dn/files/pCastCtl_1.0.0.76_20051110.cab
O18 - Protocol: about - {3050F406-98B5-11CF-BB82-00AA00BDCE0B} - C:\WINDOWS\system32\mshtml.dll
O18 - Protocol: cdl - {3DD53D40-7B8B-11D0-B013-00AA0059CE02} - C:\WINDOWS\system32\urlmon.dll
O18 - Protocol: dvd - {12D51199-0DB5-46FE-A120-47A3D7D937CC} - C:\WINDOWS\system32\msvidctl.dll
O18 - Protocol: file - {79EAC9E7-BAF9-11CE-8C82-00AA004BA90B} - C:\WINDOWS\system32\urlmon.dll
O18 - Protocol: ftp - {79EAC9E3-BAF9-11CE-8C82-00AA004BA90B} - C:\WINDOWS\system32\urlmon.dll
O18 - Protocol: gopher - {79EAC9E4-BAF9-11CE-8C82-00AA004BA90B} - C:\WINDOWS\system32\urlmon.dll
O18 - Protocol: http - {79EAC9E2-BAF9-11CE-8C82-00AA004BA90B} - C:\WINDOWS\system32\urlmon.dll
O18 - Protocol: https - {79EAC9E5-BAF9-11CE-8C82-00AA004BA90B} - C:\WINDOWS\system32\urlmon.dll
O18 - Protocol: ic32pp - {BBCA9F81-8F4F-11D2-90FF-0080C83D3571} - C:\WINDOWS\wc98pp.dll
O18 - Protocol: ipp - (no CLSID) - (no file)
O18 - Protocol: its - {9D148291-B9C8-11D0-A4CC-0000F80149F6} - C:\WINDOWS\system32\itss.dll
O18 - Protocol: javascript - {3050F3B2-98B5-11CF-BB82-00AA00BDCE0B} - C:\WINDOWS\system32\mshtml.dll
O18 - Protocol: koboo - {7DEE9D05-FA0A-4416-A6F3-6537D0EAB6A6} - C:\WINDOWS\system32\mbprot.dll
O18 - Protocol: local - {79EAC9E7-BAF9-11CE-8C82-00AA004BA90B} - C:\WINDOWS\system32\urlmon.dll
O18 - Protocol: mailto - {3050F3DA-98B5-11CF-BB82-00AA00BDCE0B} - C:\WINDOWS\system32\mshtml.dll
O18 - Protocol: mhtml - {05300401-BCBC-11D0-85E3-00C04FD85AB4} - C:\WINDOWS\system32\inetcomm.dll
O18 - Protocol: mk - {79EAC9E6-BAF9-11CE-8C82-00AA004BA90B} - C:\WINDOWS\system32\urlmon.dll
O18 - Protocol: ms-its - {9D148291-B9C8-11D0-A4CC-0000F80149F6} - C:\WINDOWS\system32\itss.dll
O18 - Protocol: msdaipp - (no CLSID) - (no file)
O18 - Protocol: mso-offdap - {3D9F03FA-7A94-11D3-BE81-0050048385D1} - C:\PROGRA~1\COMMON~1\MICROS~1\WEBCOM~1\10\OWC10.DLL
O18 - Protocol: mso-offdap11 - {32505114-5902-49B2-880A-1F7738E5A384} - C:\PROGRA~1\COMMON~1\MICROS~1\WEBCOM~1\11\OWC11.DLL
O18 - Protocol: res - {3050F3BC-98B5-11CF-BB82-00AA00BDCE0B} - C:\WINDOWS\system32\mshtml.dll
O18 - Protocol: sysimage - {76E67A63-06E9-11D2-A840-006008059382} - C:\WINDOWS\system32\mshtml.dll
O18 - Protocol: tv - {CBD30858-AF45-11D2-B6D6-00C04FBBDE6E} - C:\WINDOWS\system32\msvidctl.dll
O18 - Protocol: vbscript - {3050F3B2-98B5-11CF-BB82-00AA00BDCE0B} - C:\WINDOWS\system32\mshtml.dll
O18 - Protocol: wia - {13F3EA8B-91D7-4F0A-AD76-D2853AC8BECE} - C:\WINDOWS\system32\wiascr.dll
O23 - Service: Adobe LM Service - Adobe Systems - C:\Program Files\Common Files\Adobe Systems Shared\Service\Adobelmsvc.exe
O23 - Service: Autodesk Licensing Service - Autodesk, Inc. - C:\Program Files\Common Files\Autodesk Shared\Service\AdskScSrv.exe
O23 - Service: C-DillaSrv - Unknown owner - (no file)
O23 - Service: Kingsoft Personal Firewall Service (KPfwSvc) - Kingsoft Corporation - C:\KAV2005\KPfwSvc.EXE
O23 - Service: Kingsoft Antivirus KWatch Service (KWatchSvc) - Kingsoft Corporation - C:\KAV2005\KWatch.EXE
O23 - Service: Macromedia Licensing Service - Unknown owner - C:\Program Files\Common Files\Macromedia Shared\Service\Macromedia Licensing.exe (file missing)
O23 - Service: Remote Packet Capture Protocol v.0 (experimental) (rpcapd) - Unknown owner - %ProgramFiles%\WinPcap\rpcapd.exe" -d -f "%ProgramFiles%\WinPcap\rpcapd.ini (file missing)
O23 - Service: Windows User Mode Driver Framework (UMWdf) - Unknown owner - (no file)
O23 - Service: Windows Print Controller (Universal Disk Manager) - COMENET TECHNOLOGY - C:\Program Files\Common Files\SAND\qqfacerclient.exe
