电脑开机后便无故重启！系统重装后正常运行！可有时打开某个文件时便又自动重启！然后又是无限制开机、重启、开机、重启！再重装然后用瑞星、木马什么的杀了杀毒，还是一个样！不过有时重启N次后可以正常进入！郁闷...大虾们帮帮忙~

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。

System Repair Engineer 2.0.12.350 (2.0 RC 1)
    Windows XP Professional  - 管理权限用户 - 完整功能

以下内容被选中：
    所有的启动项目（包括注册表、启动文件夹、服务等）
    浏览器加载项
    正在运行的进程（包括进程模块信息）
    文件关联


启动项目
注册表
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run]
  <ctfmon.exe><C:\WINDOWS\System32\ctfmon.exe>
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run]
  <MSMSGS><"C:\Program Files\Messenger\msmsgs.exe" /background>
[HKEY_CURRENT_USER\Software\Microsoft\Windows NT\CurrentVersion\Windows]
  <load><>
[HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run]
  <IMJPMIG8.1><C:\WINDOWS\IME\imjp8_1\IMJPMIG.EXE /Spoil /RemAdvDef /Migration32>
[HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run]
  <PHIME2002ASync><C:\WINDOWS\System32\IME\TINTLGNT\TINTSETP.EXE /SYNC>
[HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run]
  <PHIME2002A><C:\WINDOWS\System32\IME\TINTLGNT\TINTSETP.EXE /IMEName>
[HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run]
  <Cmaudio><RunDll32 cmicnfg.cpl,CMICtrlWnd>
[HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run]
  <NvCplDaemon><RUNDLL32.EXE C:\WINDOWS\System32\NvCpl.dll,NvStartup>
[HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run]
  <nwiz><nwiz.exe /install>
[HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run]
  <HPDJ Taskbar Utility><C:\WINDOWS\System32\spool\drivers\w32x86\3\hpztsb07.exe>
[HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run]
  <CnsMin><Rundll32.exe C:\WINDOWS\DOWNLO~1\CnsMin.dll,Rundll32>
[HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run]
  <helper.dll><C:\WINDOWS\system32\rundll32.exe C:\PROGRA~1\3721\helper.dll,Rundll32>
[HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run]
  <Windows木马防火墙><C:\Program Files\ftc\Trojanwall.exe>
[HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run]
  <RavTask><"C:\Program Files\Rising\Rav\RavTask.exe" -system>
[HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run]

<RavScanBD><"C:\Program Files\Rising\Rav\ScanBD.exe" /INST>
[HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run]
  <TkBellExe><"C:\Program Files\Common Files\Real\Update_OB\realsched.exe" -osboot>
[HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run]
  <KernelFaultCheck><%systemroot%\system32\dumprep 0 -k>
[HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion\Winlogon]
  <shell><Explorer.exe>
[HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion\Winlogon]
  <Userinit><C:\WINDOWS\System32\userinit.exe,>
[HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion\Windows]
  <AppInit_DLLs><>

==================================
启动文件夹
[Microsoft Office]
  <C:\Documents and Settings\All Users\「开始」菜单\程序\启动\Microsoft Office.lnk><N>
[腾讯QQ]
  <C:\Documents and Settings\user\「开始」菜单\程序\启动\腾讯QQ.lnk><N>
==================================
服务
[IMAPI CD-Burning COM Service / ImapiService]
  <C:\WINDOWS\System32\imapi.exe><Microsoft Corporation>
[NVIDIA Driver Helper Service / NVSvc]
  <C:\WINDOWS\System32\nvsvc32.exe><NVIDIA Corporation>
[Rising Process Communication Center / RsCCenter]
  <"C:\Program Files\Rising\Rav\CCenter.exe"><Beijing Rising Technology Co., Ltd.>
[RsRavMon Service / RsRavMon]
  <"C:\Program Files\Rising\Rav\Ravmond.exe"><Beijing Rising Technology Co., Ltd.>

==================================
浏览器加载项
[IeCatch5 Class]
  {2F364306-AA45-47B5-9F9D-39A8B94E7EF7} <C:\PROGRA~1\FLASHGET\jccatch.dll, FlashGet>
[QQBrowserHelperObject Class]
  {54EBD53A-9BC1-480B-966A-843A333CA162} <C:\Program Files\Tencent\QQ\QQIEHelper.dll, 深圳市腾讯计算机系统有限公司>
[Google Toolbar Helper]
  {AA58ED58-01DD-4d91-8333-CF10577473F7} <c:\program files\google\googletoolbar1.dll, Google Inc.>
[CnsHook Class]
  {D157330A-9EF3-49F8-9A67-4141AC41ADD4} <C:\WINDOWS\DOWNLO~1\CnsHook.dll, 北京三七二一科技有限公司>

[手机短信]
  {00000000-0000-0001-0001-596BAEDD1289} <http://sms.3721.com/ie/index.htm, N/A>
[上网助手]
  {5D73EE86-05F1-49ed-B850-E423120EC338} <http://assistant.3721.com/index.htm?fb=Cns, N/A>
[QQ]
  {c95fe080-8f5d-11d2-a20b-00aa003c157b} <C:\Program Files\Tencent\QQ\QQ.EXE, TENCENT>
[FlashGet]
  {D6E814A0-E0C5-11d4-8D29-0050BA6940E3} <C:\PROGRA~1\FLASHGET\flashget.exe, FlashGet.com>
[QQIEFloatBarCfgCmd Class]
  {DEDEB80D-FA35-45d9-9460-4983E5A8AFE6} <C:\Program Files\Tencent\QQ\QQIEHelper.dll, 深圳市腾讯计算机系统有限公司>
[]
  {ECF2E268-F28C-48d2-9AB7-8F69C11CCB71} <http://assistant.3721.com/security1.htm?fb=Cns, N/A>
[]
  {FD00D911-7529-4084-9946-A29F1BDF4FE5} <http://assistant.3721.com/clean1.htm?fb=Cns, N/A>
[电台(&R)]
  {8E718888-423F-11D2-876E-00A0C9082467} <C:\WINDOWS\System32\msdxm.ocx, Microsoft Corporation>
[FlashGet Bar]
{E0E899AB-F487-11D5-8D29-0050BA6940E3} <C:\PROGRA~1\FLASHGET\fgiebar.dll, Amaze Soft>
[&Google]
  {2318C2B1-4965-11d4-9B18-009027A5CD4F} <c:\program files\google\googletoolbar1.dll, Google Inc.>
[BitComet工具栏]
  {3F1ABCDB-A875-46c1-8345-B72A4567E486} <F:\BT\BitComet\BitCometBar\BitCometBar0.6.dll, N/A>
[Shockwave Flash Object]
  {D27CDB6E-AE6D-11CF-96B8-444553540000} <C:\WINDOWS\System32\Macromed\Flash\Flash8b.ocx, Macromedia, Inc.>
[Rising Web Scan Object]
  {E4E2F180-CB8B-4DE9-ACBB-DA745D3BA153} <C:\WINDOWS\Downloaded Program Files\OL2005.dll, Beijing Rising Technology Co., Ltd.>
[&Google Search]
  <res://C:\Program Files\Google\GoogleToolbar1.dll/cmsearch.html, N/A>
[上传到QQ网络硬盘]
  <C:\Program Files\Tencent\qq\AddToNetDisk.htm, N/A>
[使用网际快车下载]
  <C:\Program Files\FlashGet\jc_link.htm, N/A>

<C:\Program Files\FlashGet\jc_all.htm, N/A>
[反向链接]
  <res://C:\Program Files\Google\GoogleToolbar1.dll/cmbacklinks.html, N/A>
[添加到QQ自定义面板]
  <C:\Program Files\Tencent\qq\AddPanel.htm, N/A>
[添加到QQ表情]
  <C:\Program Files\Tencent\qq\AddEmotion.htm, N/A>
[用QQ彩信发送该图片]
  <C:\Program Files\Tencent\qq\SendMMS.htm, N/A>
[类似网页]
  <res://C:\Program Files\Google\GoogleToolbar1.dll/cmsimilar.html, N/A>
[缓存的网页快照]
  <res://C:\Program Files\Google\GoogleToolbar1.dll/cmcache.html, N/A>
==================================
正在运行的进程
[PID: 420][\SystemRoot\System32\smss.exe]  <Microsoft Corporation><5.1.2600.0 (xpclient.010817-1148)>
[PID: 488][\??\C:\WINDOWS\system32\csrss.exe]  <Microsoft Corporation><5.1.2600.0 (xpclient.010817-1148)>
[PID: 512][\??\C:\WINDOWS\system32\winlogon.exe]  <Microsoft Corporation><5.1.2600.0 (xpclient.010817-1148)>
[PID: 556][C:\WINDOWS\system32\services.exe]  <Microsoft Corporation><5.1.2600.0 (xpclient.010817-1148)>
[PID: 568][C:\WINDOWS\system32\lsass.exe]  <Microsoft Corporation><5.1.2600.0 (xpclient.010817-1148)>
[PID: 724][C:\WINDOWS\system32\svchost.exe]  <Microsoft Corporation><5.1.2600.0 (xpclient.010817-1148)>
[PID: 776][C:\Program Files\Rising\Rav\CCenter.exe]  <Beijing Rising Technology Co., Ltd.><18, 0, 0, 3>
    [C:\Program Files\ftc\ProcessHook.dll]  <Fygsoft and Microsoft><1.0.0.38>
[PID: 792][C:\WINDOWS\System32\svchost.exe]  <Microsoft Corporation><5.1.2600.0 (xpclient.010817-1148)>
[PID: 904][C:\WINDOWS\System32\svchost.exe]  <Microsoft Corporation><5.1.2600.0 (xpclient.010817-1148)>
[PID: 1112][C:\WINDOWS\System32\svchost.exe]  <Microsoft Corporation><5.1.2600.0 (xpclient.010817-1148)>
[PID: 1124][C:\Program Files\Rising\Rav\Ravmond.exe]  <Beijing Rising Technology Co., Ltd.><18, 0, 1, 19>
    [C:\Program Files\Rising\Rav\BWList.dll]  <Beijing Rising Technology Co., Ltd.><18, 0, 0, 16>
    [C:\Program Files\Rising\Rav\RsCommX.dll]  <rising><18, 0, 0, 1>    [C:\Program Files\Rising\Rav\RSAPPMGR.DLL]  <Beijing Rising Technology Co., Ltd.><18, 0, 0, 2>

以上日志看不出问题来
建议粘全日志，并描述问题。

本人前几天也碰到类似问题,后检修发现是硬盘风扇不工作,导致重复死机.建议你可以拿到修理部跟换风扇一个.