运行Hijackthis，把下面的选中打上钩，修复
F2 - REG:system.ini: UserInit=C:\WINDOWS\Media\update.exe,C:\WINDOWS\SYSTEM32\Userinit.exe,
O2 - BHO: MonitorURL Class - {08A312BB-5409-49FC-9347-54BB7D069AC6} - C:\PROGRA~1\DESKAD~1\deskipn.dll
O2 - BHO: Shockwave Flash Object - {14A21378-5BB1-4BC4-95D5-5D3F51527F6F} - C:\WINDOWS\system32\smflash.ocx
O2 - BHO: MyIEHelper Class - {16A770A0-0E87-4278-B748-2460D64A8386} - C:\Documents and Settings\All Users\Application Data\Microsoft\IEHelper\IEHelper_4580.dll (file missing)
O2 - BHO: MyIEHelper Class - {16B770A0-0E87-4278-B748-2460D64A8386} - C:\Documents and Settings\All Users\Application Data\Microsoft\IEHelper\IEHelper_5013.dll
O2 - BHO: (no name) - {295CD217-AD34-4B66-91BA-48D5EFD9CA20} - C:\WINDOWS\system32\NBBHO.dll
O2 - BHO: raObject Class - {46F194EB-B7DB-4B7A-BD42-5FF39FD17664} - C:\PROGRA~1\pcast\hbcast.dll
O2 - BHO: CdnForIE Class - {5C3853CF-C7E0-4946-B3FA-1ABDB6F48108} - C:\PROGRA~1\CNNIC\Cdn\cdnforie.dll
O2 - BHO: XBTP03129 - {6029B367-250A-4696-925C-641709CA7381} - C:\PROGRA~1\KUAISO~1\KUAISO~1.DLL
O2 - BHO: JMX.JmxCenter - {63859236-76BF-493C-A587-DF479EBA2D4B} - C:\WINDOWS\system32\EJMX.dll
O2 - BHO: YOK超级搜索 - {75FE2B5A-D3A4-4EFA-AC11-ADC9C9459688} - C:\Program Files\YOK.com\SuperSearch\YOK_SuperSearch.dll (file missing)
O2 - BHO: (no name) - {75FE2B5A-D3A4-4EFA-AC11-ADC9C9459688}? - (no file)
O2 - BHO: Sun Java2 - {C61A70F3-505E-4B90-916F-627A8706B4BC} - c:\WINDOWS\system32\COMBoHEvent.dll
O2 - BHO: OsbornTech Popup Blocker - {C68AE9C0-0909-4DDC-B661-C1AFB9F5AE53} - C:\WINDOWS\system32\ms.dll
O3 - Toolbar: YOK超级搜索 - {F869BB38-FFEF-4589-B986-610B7AD0ADA2} - C:\Program Files\YOK.com\SuperSearch\YOK_SuperSearch.dll (file missing)
O4 - HKLM\..\Run: [spoolsv] C:\WINDOWS\system32\spoolsv\spoolsv.exe -printerO4 - HKLM\..\Run: [Desktop] C:\WINDOWS\system32\rundll32.exe "C:\Program Files\DeskAdTop\Run.dll" ,Rundll
O4 - HKLM\..\Run: [CdnCtr] C:\Program Files\CNNIC\Cdn\cdnup.exe
O4 - HKLM\..\Run: [pbmini] C:\Program Files\pcast\PodcastbarMini\PodcastBar.exe -hide
O4 - HKLM\..\Run: [MicrosoftRedirectionProgram] C:\WINDOWS\svchost.exe
O4 - HKLM\..\RunOnce: [{9D0351F9-8E49-4ed1-BBCE-0795F5B9F240}] C:\WINDOWS\system32\richnotify.exe
O4 - HKCU\..\Run: [msq] C:\WINDOWS\system32\iExplorer.exe
O4 - Global Startup: IE-Bar.lnk = C:\Program Files\Common Files\IE-Bar\iebar.exe
O6 - HKCU\Software\Policies\Microsoft\Internet Explorer\Control Panel present


重启后删除
C:\WINDOWS\system32\spoolsv\spoolsv.exe
C:\WINDOWS\svchost.exe
C:\WINDOWS\system32\richnotify.exe
C:\WINDOWS\system32\iExplorer.exe

到添加删除里面卸载：中文上网

楼主按以上方法修复后重启。
请下载 System Repair Engineer，使用“智能扫描”，按下“扫描”按钮进行扫描，扫描完成后按下“保存报告”按钮保存报告日志文件（SREng.LOG），把保存的报告日志文件内容复制-粘贴上来
下载网址
http://www.kztechs.com/sreng/sreng2.zip
http://forum.ikaka.com/topic.asp?board=67&artid=5188931
日志一次粘不完，分次粘完，请不要修改。