启动机器，到登陆窗口时，如果马上输入密码，则能正常进入系统，如果过一会输入密码，则不能进入系统，提示与管理员联系。进系统后，网络时断时续，用瑞星网络版，总是能杀掉几个病毒，（名字忘记下来了），每次杀都有。
下面是HijackThis日志，高手帮忙看看。
Logfile of HijackThis v1.99.1
Scan saved at 16:22:22, on 2006-3-20
Platform: Windows 2000 SP4 (WinNT 5.00.2195)
MSIE: Internet Explorer v5.00 SP4 (5.00.2920.0000)
Running processes:
C:\WINNT\System32\smss.exe
C:\WINNT\system32\winlogon.exe
C:\WINNT\system32\services.exe
C:\WINNT\system32\lsass.exe
C:\PROGRAM FILES\RISING\RAV\Ravmond.exe
C:\PROGRAM FILES\RISING\RAV\RavStub.exe
C:\WINNT\system32\spoolsv.exe
C:\WINNT\System32\msdtc.exe
C:\Program Files\Symantec\pcAnywhere\awhost32.exe
C:\WINNT\System32\svchost.exe
C:\WINNT\System32\llssrv.exe
C:\PROGRA~1\MICROS~3\MSSQL\binn\sqlservr.exe
C:\WINNT\Explorer.EXE
C:\Program Files\Rising\Rav\RavTray.exe
C:\Program Files\Rising\Rav\RavTimer.exe
C:\Program Files\Rising\Rav\RavMon.exe
C:\WINNT\system32\internat.exe
C:\Program Files\Microsoft SQL Server\80\Tools\Binn\sqlmangr.exe
C:\PROGRAM FILES\RISING\RAV\RavAgent.exe
C:\PROGRAM FILES\RISING\RAV\RavAlert.exe
C:\Program Files\Rising\Rav\RavService.exe
C:\PROGRAM FILES\RISING\RAV\RavUpdate.exe
C:\PROGRAM FILES\RISING\RAV\CCENTER.EXE
C:\WINNT\system32\MSTask.exe
C:\WINNT\win32ssr.exe
C:\WINNT\System32\WBEM\WinMgmt.exe
C:\WINNT\system32\svchost.exe
C:\WINNT\system32\Dfssvc.exe
C:\WINNT\System32\inetsrv\inetinfo.exe
C:\Program Files\Common Files\System\MSSearch\Bin\mssearch.exe
C:\WINNT\System32\WBEM\WinMgmt.exe
C:\WINNT\System32\mdm.exe
H:\瑞星论坛系统小工具\HijackThis V1.99.1 汉化版\HijackThis.exe
C:\WINNT\System32\svchost.exe
R3 - URLSearchHook: Tencent SearchHook - {DB8B2393-7A6C-4C76-88CE-6B1F6FF6FFE9} - C:\Program Files\TENCENT\Adplus\SSAddr.dll
O2 - BHO: Tencent Browser Helper - {0C7C23EF-A848-485B-873C-0ED954731014} - C:\Program Files\TENCENT\Adplus\SSAddr.dll
O2 - BHO: QQIEHelper - {54EBD53A-9BC1-480B-966A-843A333CA162} - C:\Program Files\Tencent\QQ\QQIEHelper.dll
O3 - Toolbar: @msdxmLC.dll,-1@2052,电台(&R) - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINNT\System32\msdxm.ocx
O4 - HKLM\..\Run: [AddrPlus3] C:\PROGRA~1\TENCENT\Adplus\stup.exe C:\PROGRA~1\TENCENT\Adplus\Adplus.dll Rundll32
O4 - HKLM\..\Run: [RavTray] C:\Program Files\Rising\Rav\RavTray.exe
O4 - HKLM\..\Run: [RavTimer] C:\Program Files\Rising\Rav\RavTimer.exe
O4 - HKLM\..\Run: [RavMon] C:\Program Files\Rising\Rav\RavMon.exe -system
O4 - HKCU\..\Run: [Internat.exe] internat.exe
O4 - Startup: 腾讯QQ.lnk = C:\Program Files\Tencent\QQ\QQ.exe
O4 - Global Startup: 服务管理器.lnk = C:\Program Files\Microsoft SQL Server\80\Tools\Binn\sqlmangr.exe
O8 - Extra context menu item: &Download by NetAnts - C:\PROGRA~1\NetAnts\NAGet.htm
O8 - Extra context menu item: Download &All by NetAnts - C:\PROGRA~1\NetAnts\NAGetAll.htm
O8 - Extra context menu item: 上传到QQ网络硬盘 - C:\Program Files\Tencent\QQ\AddToNetDisk.htm
O8 - Extra context menu item: 添加到QQ自定义面板 - C:\Program Files\Tencent\QQ\AddPanel.htm
O8 - Extra context menu item: 添加到QQ表情 - C:\Program Files\Tencent\QQ\AddEmotion.htm
O8 - Extra context menu item: 用QQ彩信发送该图片 - C:\Program Files\Tencent\QQ\SendMMS.htm
O9 - Extra button: NetAnts - {57E91B47-F40A-11D1-B792-444553540000} - C:\PROGRA~1\NetAnts\NetAnts.exe
O9 - Extra 'Tools' menuitem: &NetAnts - {57E91B47-F40A-11D1-B792-444553540000} - C:\PROGRA~1\NetAnts\NetAnts.exe
O9 - Extra button: Related - {c95fe080-8f5d-11d2-a20b-00aa003c157a} - C:\WINNT\web\related.htm
O9 - Extra 'Tools' menuitem: Show &Related Links - {c95fe080-8f5d-11d2-a20b-00aa003c157a} - C:\WINNT\web\related.htm
O9 - Extra button: QQ - {c95fe080-8f5d-11d2-a20b-00aa003c157b} - C:\Program Files\Tencent\QQ\QQ.EXE
O9 - Extra 'Tools' menuitem: 腾讯QQ - {c95fe080-8f5d-11d2-a20b-00aa003c157b} - C:\Program Files\Tencent\QQ\QQ.EXE
O9 - Extra button: (no name) - {DEDEB80D-FA35-45d9-9460-4983E5A8AFE6} - C:\Program Files\Tencent\QQ\QQIEHelper.dll
O9 - Extra 'Tools' menuitem: QQ炫彩工具条设置 - {DEDEB80D-FA35-45d9-9460-4983E5A8AFE6} - C:\Program Files\Tencent\QQ\QQIEHelper.dll
O11 - Options group: [TBH] 搜搜地址栏搜索
O14 - IERESET.INF: SEARCH_PAGE_URL=
O14 - IERESET.INF: START_PAGE_URL=
O15 - Trusted IP range: http://10.10.84.23
O17 - HKLM\System\CCS\Services\Tcpip\..\{33969680-D5A4-4C4E-BC63-DED9EA2FA7CE}: NameServer = 10.4.1.13,202.98.0.68
O20 - Winlogon Notify: PCANotify - C:\WINNT\SYSTEM32\PCANotify.dll
O23 - Service: pcAnywhere Host Service (awhost32) - Symantec Corporation - C:\Program Files\Symantec\pcAnywhere\awhost32.exe
O23 - Service: Logical Disk Manager Administrative Service (dmadmin) - VERITAS Software Corp. - C:\WINNT\System32\dmadmin.exe
O23 - Service: Performance True Type Font (PerfFont) - Unknown owner - C:\WINNT\system32\perfont.exe
O23 - Service: Rav Net Agent (RavAgent) - 北京瑞星科技股份有限公司 - C:\PROGRAM FILES\RISING\RAV\RavAgent.exe
O23 - Service: Rav Net Alert (RavAlert) - 北京瑞星科技股份有限公司 - C:\PROGRAM FILES\RISING\RAV\RavAlert.exe
O23 - Service: RavService - Unknown owner - C:\Program Files\Rising\Rav\RavService.exe" /service (file missing)
O23 - Service: RavUpdate - Unknown owner - C:\PROGRAM FILES\RISING\RAV\RavUpdate.exe" (file missing)
O23 - Service: Rising Process Communication Center (RsCCenter) - Beijing Rising Technology Co., Ltd. - C:\PROGRAM FILES\RISING\RAV\CCENTER.EXE
O23 - Service: RsRavMon Service (RsRavMon) - Beijing Rising Technology Co., Ltd. - C:\PROGRAM FILES\RISING\RAV\Ravmond.exe
O23 - Service: Win32Sr - Unknown owner - C:\WINNT\win32ssr.exe
