Mine has shut down randomly and without warning twice now. It immediately restarts on it's own and then it's fine.

:confused:

it doesnt get any errors after it restarts? it doesnt give you a message saying that it has recovered from a serious error?

update and run your antivirus and antispyware programs, post a HijackThis log here if you think it is finding anything, otherwise...

this could be heat-related, do you have an air conditioner near the computer?

Go buy some canned air, shut the computer off, unplug everything, open up the case and blow all the dust out (may want to do this outside). Make sure you blow all the dust out of the power supply - it is normally near the top at the back of the case - the power cord plugs into it. Be careful if you are blowing out the processor fan, you may want to hold the fan with a pencil to prevent it from spinning as you blow it out, so it doesnt damage it.

if you feel comfortable doing so, you could try reseating the RAM (http://www.djonmac.com/ram/removemods.html), just make sure you ground yourself or discharge any static electricity and only touch the sides of the chips. RAM chips expand and contract with changes in temp, and sometimes they can partially work themselves out of the socket so it may help to just take em out and put em back in again.

if you are too close to the air conditioner, it can actually form condensation inside your PC's case - this is a very BAD thing, so move it farther away if possible.

I'm leaning towards overheating right now. If it does it again, I'll check for spyware. It does not come up with an error. It goes off like it would if the power goes off, the screen just goes black, but the power button light stays on and within a couple of seconds it is restarting.

It was fine last night and all morning, but about a half-hour ago it restarted on it's own while it wasn't being used.

Here's my HijackThis log:

Logfile of HijackThis v1.99.1
Scan saved at 2:40:23 PM, on 6/19/2006
Platform: Windows XP (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 (6.00.2600.0000)
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:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\Explorer.EXE
C:\windows\system\hpsysdrv.exe
C:\Program Files\Hewlett-Packard\Digital Imaging\Unload\hpqcmon.exe
C:\HP\KBD\KBD.EXE
C:\WINDOWS\system32\dla\tfswctrl.exe
C:\Program Files\WildTangent\DDC\DDCManager\DDCMan.exe
C:\WINDOWS\System32\igfxtray.exe
C:\WINDOWS\System32\hkcmd.exe
C:\PROGRA~1\NORTON~1\navapw32.exe
C:\Program Files\Common Files\Real\Update_OB\realsched.exe
C:\Program Files\Google\Google Desktop Search\GoogleDesktop.exe
c:\Program Files\Norton AntiVirus\navapsvc.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\Google\Google Desktop Search\GoogleDesktopIndex.exe
C:\Program Files\Google\Google Desktop Search\GoogleDesktopCrawl.exe
C:\Program Files\Google\Google Desktop Search\GoogleDesktopOE.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\WINDOWS\system32\notepad.exe
C:\Documents and Settings\Owner\Local Settings\Temp\Temporary Directory 2 for hijackthis.zip\HijackThis.exe
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://us6.hpwis.com/
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = http://srch-us6.hpwis.com/
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://us6.hpwis.com/
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = http://srch-us6.hpwis.com/
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Bar = http://srch-us6.hpwis.com/
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = http://srch-us6.hpwis.com/
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://us6.hpwis.com/
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,CustomizeSearch = http://srch-us6.hpwis.com/
R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings,ProxyOverride = localhost
R3 - URLSearchHook: Yahoo! Toolbar - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\Program Files\Yahoo!\Companion\Installs\cpn\yt.dll
O2 - BHO: Yahoo! Toolbar Helper - {02478D38-C3F9-4EFB-9B51-7695ECA05670} - C:\Program Files\Yahoo!\Companion\Installs\cpn\yt.dll
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 5.0\Reader\ActiveX\AcroIEHelper.ocx
O2 - BHO: Google Toolbar Helper - {AA58ED58-01DD-4d91-8333-CF10577473F7} - c:\program files\google\googletoolbar3.dll
O2 - BHO: CNavExtBho Class - {BDF3E430-B101-42AD-A544-FADC6B084872} - c:\Program Files\Norton AntiVirus\NavShExt.dll
O3 - Toolbar: &Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINDOWS\System32\msdxm.ocx
O3 - Toolbar: hp toolkit - {B2847E28-5D7D-4DEB-8B67-05D28BCF79F5} - C:\HP\EXPLOREBAR\HPTOOLKT.DLL
O3 - Toolbar: Norton AntiVirus - {42CDD1BF-3FFB-4238-8AD1-7859DF00B1D6} - c:\Program Files\Norton AntiVirus\NavShExt.dll
O3 - Toolbar: Yahoo! Toolbar - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\Program Files\Yahoo!\Companion\Installs\cpn\yt.dll
O3 - Toolbar: &Google - {2318C2B1-4965-11d4-9B18-009027A5CD4F} - c:\program files\google\googletoolbar3.dll
O4 - HKLM\..\Run: [hpsysdrv] c:\windows\system\hpsysdrv.exe
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE NvQTwk,NvCplDaemon initialize
O4 - HKLM\..\Run: [nwiz] nwiz.exe /install
O4 - HKLM\..\Run: [CamMonitor] c:\Program Files\Hewlett-Packard\Digital Imaging\Unload\hpqcmon.exe
O4 - HKLM\..\Run: [KBD] C:\HP\KBD\KBD.EXE
O4 - HKLM\..\Run: [StorageGuard] "C:\Program Files\VERITAS Software\Update Manager\sgtray.exe" /r
O4 - HKLM\..\Run: [dla] C:\WINDOWS\system32\dla\tfswctrl.exe
O4 - HKLM\..\Run: [DDCM] "C:\Program Files\WildTangent\DDC\DDCManager\DDCMan.exe" -Background
O4 - HKLM\..\Run: [DDCActiveMenu] "C:\Program Files\WildTangent\DDC\ActiveMenu\DDCActiveMenu.exe" -boot
O4 - HKLM\..\Run: [Recguard] C:\WINDOWS\SMINST\RECGUARD.EXE
O4 - HKLM\..\Run: [IgfxTray] C:\WINDOWS\System32\igfxtray.exe
O4 - HKLM\..\Run: [HotKeysCmds] C:\WINDOWS\System32\hkcmd.exe
O4 - HKLM\..\Run: [PS2] C:\WINDOWS\system32\ps2.exe
O4 - HKLM\..\Run: [NAV Agent] c:\PROGRA~1\NORTON~1\navapw32.exe
O4 - HKLM\..\Run: [Symantec NetDriver Monitor] C:\PROGRA~1\SYMNET~1\SNDMon.exe /Consumer
O4 - HKLM\..\Run: [SSC_UserPrompt] C:\Program Files\Common Files\Symantec Shared\Security Center\UsrPrmpt.exe
O4 - HKLM\..\Run: [AlcxMonitor] ALCXMNTR.EXE
O4 - HKLM\..\Run: [TkBellExe] "C:\Program Files\Common Files\Real\Update_OB\realsched.exe" -osboot
O4 - HKLM\..\Run: [KernelFaultCheck] %systemroot%\system32\dumprep 0 -k
O4 - HKLM\..\Run: [KernelFaultCheck] %systemroot%\system32\dumprep 0 -k
O4 - HKCU\..\Run: [MSMSGS] "C:\Program Files\Messenger\msmsgs.exe" /background
O4 - HKCU\..\Run: [Google Desktop Search] "C:\Program Files\Google\Google Desktop Search\GoogleDesktop.exe" /startup
O4 - Global Startup: hp center UI.lnk = C:\Program Files\hp center\137903\Shadow\ShadowBar.exe
O4 - Global Startup: hp center.lnk = C:\Program Files\hp center\137903\Program\BackWeb-137903.exe
O8 - Extra context menu item: &Google Search - res://c:\program files\google\GoogleToolbar3.dll/cmsearch.html
O8 - Extra context menu item: &Translate English Word - res://c:\program files\google\GoogleToolbar3.dll/cmwordtrans.html
O8 - Extra context menu item: Backward Links - res://c:\program files\google\GoogleToolbar3.dll/cmbacklinks.html
O8 - Extra context menu item: Cached Snapshot of Page - res://c:\program files\google\GoogleToolbar3.dll/cmcache.html
O8 - Extra context menu item: Similar Pages - res://c:\program files\google\GoogleToolbar3.dll/cmsimilar.html
O8 - Extra context menu item: Translate Page into English - res://c:\program files\google\GoogleToolbar3.dll/cmtrans.html
O9 - Extra button: Related - {c95fe080-8f5d-11d2-a20b-00aa003c157a} - C:\WINDOWS\web\related.htm
O9 - Extra 'Tools' menuitem: Show &Related Links - {c95fe080-8f5d-11d2-a20b-00aa003c157a} - C:\WINDOWS\web\related.htm
O12 - Plugin for .spop: C:\Program Files\Internet Explorer\Plugins\NPDocBox.dll
O16 - DPF: {072D3F2E-5FB6-11D3-B461-00C04FA35A21} (CFForm Runtime) - http://www.suscc.edu/CFIDE/classes/CFJava.cab
O16 - DPF: {17492023-C23A-453E-A040-C7C580BBF700} (Windows Genuine Advantage Validation Tool) - http://go.microsoft.com/fwlink/?linkid=39204
O16 - DPF: {30528230-99F7-4BB4-88D8-FA1D4F56A2AB} (YInstStarter Class) - http://us.dl1.yimg.com/download.yahoo.com/dl/installs/yinst20040510.cab
O16 - DPF: {56336BCB-3D8A-11D6-A00B-0050DA18DE71} (RdxIE Class) - http://software-dl.real.com/13fc0d01e895a071ee00/netzip/RdxIE601.cab
O16 - DPF: {6414512B-B978-451D-A0D8-FCFDF33E833C} (WUWebControl Class) - http://update.microsoft.com/windowsupdate/v6/V5Controls/en/x86/client/wuweb_site.cab?1149280803631
O16 - DPF: {6E32070A-766D-4EE6-879C-DC1FA91D2FC3} (MUWebControl Class) - http://update.microsoft.com/microsoftupdate/v6/V5Controls/en/x86/client/muweb_site.cab?1149281053080
O20 - Winlogon Notify: igfxcui - C:\WINDOWS\SYSTEM32\igfxsrvc.dll
O23 - Service: Norton AntiVirus Auto Protect Service (navapsvc) - Symantec Corporation - c:\Program Files\Norton AntiVirus\navapsvc.exe
O23 - Service: NVIDIA Driver Helper Service (NVSvc) - NVIDIA Corporation - C:\WINDOWS\System32\nvsvc32.exe
O23 - Service: Symantec Network Drivers Service (SNDSrvc) - Symantec Corporation - C:\Program Files\Common Files\Symantec Shared\SNDSrvc.exe
O23 - Service: SymWMI Service (SymWSC) - Symantec Corporation - C:\Program Files\Common Files\Symantec Shared\Security Center\SymWSC.exe

i honestly dont see anything bad in there, you could try uninstalling the Google Desktop and toolbar, i have heard of it causing some conflicts in some people's systems, or you could try runing an online virus scan at

http://www.pandasoftware.com/products/activescan?NRMODE=Published&NRORIGINALURL=%2factivescan&NRNODEGUID=%7b3B202047-35D4-4DA2-B310-B1DBEC2971F2%7d&NRCACHEHINT=Guest

or

http://housecall60.trendmicro.com/en/start_corp.asp

but i still think that it is a heat issue

Everest:

Motherboard 48-49 degrees C
CPU: 55-56 degrees C

http://www.geekstogo.com/forum/Computer_restarts_unexpectedly_and_without_warning-t117738.html

My hard drive. :(

This is what I get when it shuts down suddenly now:

http://support.microsoft.com/?scid=kb;en-us;897079

It works fine for hours at a time and then during the evening shuts down several times, and then is fine after 10pm once again. It's very bizarre. Everytime I tried to run a virus scan earlier it shut down.

:mad: