我最近重新做了系统装的是WIN XP SP2 5.1版本的，只装了华硕K8N的主板驱动，6600GT的显卡驱动，打印机驱动，摄像头驱动然后装了瑞星杀软、迅雷、暴风影音等几个程序，可是我的系统开机以后过一段时间就会自动关闭掉好多后台服务比如ICS，比如Windows Audio，比如Windows Time，等等很多的，不知道是怎么回事，用瑞星杀毒又显示没有病毒，请问各位能帮我解决吗

这是我用HJ扫描的日志
Logfile of HijackThis v1.99.1
Scan saved at 10:35:43, on 2006-12-18
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\winlogon.exe
C:\WINDOWS\system32\services.exe
C:\WINDOWS\system32\lsass.exe
C:\WINDOWS\system32\svchost.exe
d:\Program Files\Rising\Rav\CCenter.exe
C:\WINDOWS\System32\svchost.exe
d:\Program Files\Rising\Rav\Ravmond.exe
C:\WINDOWS\Explorer.EXE
C:\WINDOWS\system32\spoolsv.exe
d:\Program Files\Rising\Rav\RavStub.exe
C:\WINDOWS\system32\nvsvc32.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\VM_STI.EXE
D:\Program Files\Rising\Rav\RavTask.exe
D:\Program Files\Rising\Rav\Ravmon.exe
C:\WINDOWS\system32\ctfmon.exe
C:\WINDOWS\System32\svchost.exe
H:\Backup\tooles\系统相关\HijackThis.exe

O2 - BHO: ThunderBHO - {889D2FEB-5411-4565-8998-1DD2C5261283} - d:\Program Files\Thunder Network\Thunder\ComDlls\XunLeiBHO_006.dll
O4 - HKLM\..\Run: [BigDogPath] C:\WINDOWS\VM_STI.EXE VIMICRO USB PC Camera
O4 - HKLM\..\Run: [RavTask] "d:\Program Files\Rising\Rav\RavTask.exe" -system
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE C:\WINDOWS\system32\NvCpl.dll,NvStartup
O4 - HKLM\..\RunOnce: [RavStub] "d:\Program Files\Rising\Rav\ravstub.exe" /RUNONCE
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe
O8 - Extra context menu item: &使用迅雷下载 - d:\Program Files\Thunder Network\Thunder\Program\GetUrl.htm
O8 - Extra context menu item: &使用迅雷下载全部链接 - d:\Program Files\Thunder Network\Thunder\Program\GetAllUrl.htm
O8 - Extra context menu item: 上传到QQ网络硬盘 - D:\Program Files\Tencent\QQ\AddToNetDisk.htm
O8 - Extra context menu item: 添加到QQ自定义面板 - D:\Program Files\Tencent\QQ\AddPanel.htm
O8 - Extra context menu item: 添加到QQ表情 - D:\Program Files\Tencent\QQ\AddEmotion.htm
O8 - Extra context menu item: 用QQ彩信发送该图片 - D:\Program Files\Tencent\QQ\SendMMS.htm
O9 - Extra button: 启动迅雷5 - {09BA8F6D-CB54-424B-839C-C2A6C8E6B436} - d:\Program Files\Thunder Network\Thunder\Thunder.exe
O9 - Extra 'Tools' menuitem: 启动迅雷5 - {09BA8F6D-CB54-424B-839C-C2A6C8E6B436} - d:\Program Files\Thunder Network\Thunder\Thunder.exe
O9 - Extra button: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\msmsgs.exe
O9 - Extra 'Tools' menuitem: Windows Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\msmsgs.exe
O16 - DPF: {8D9E0B29-563C-4226-86C1-5FF2AE77E1D2} (AxSubmitControl Class) - https://mybank.icbc.com.cn/icbc/perbank/AxSafeControls.cab
O23 - Service: NVIDIA Display Driver Service (NVSvc) - NVIDIA Corporation - C:\WINDOWS\system32\nvsvc32.exe
O23 - Service: Rising Process Communication Center (RsCCenter) - Beijing Rising Technology Co., Ltd. - d:\Program Files\Rising\Rav\CCenter.exe
O23 - Service: RsRavMon Service (RsRavMon) - Beijing Rising Technology Co., Ltd. - d:\Program Files\Rising\Rav\Ravmond.exe

统计了一下，被自动关闭掉的服务有
Application Layer Gateway Service
Computer Browser
Cryptographic Services
DHCP Client
Distributed Link Tracking Client
Logical Disk Manager
Network Location Awareness (NLA)
Secondary Logon
Security Center
Server
Shell Hardware Detection
Windows Audio
Windows Firewall/Internet Connection Sharing (ICS)
Windows Time
Wireless Zero Configuration
Workstation

谁能帮我看一看啊

我发现我在这里发帖子从来没人回过我，心寒

救命啊，我们都是同样问题啊。。。