Spontanious rebooting?

Does anyone here have any idea what might cause a computer to reboot itself without prompting? This just happened to me.

I wasn’t doing anything particularly strenuous at the time.

Just random? I’d scan your files to make sure nothing made its way into your system, just to be sure. Sorta sounds like it would be from a bad file, but it could be something else.
(Or could be stupid random Windows Updates…they sometimes do that, though it usually prompts you beforehand.)

This problem has somehow led to me not being able to switch on my computer at all. Lucky me.

The obvious issue is a problem with my power source, but I really hope that’s not it, as I just replaced my power supply a few months ago. I don’t know what else it could be, though.

Hmm…sounds like it could be an internal problem. Which if that’s the case, it’s gonna suck. But I’m sure you probably messed with the power supply issue to see what’s working (if anything), so that’s what I’m guessing.

Turned out it was a power supply. Had to replace it. Was more expensive than I was planning on, but ah well.

I’m having this problem with my laptop at the moment. My screen just goes black out of nowhere and reboots. All I normally have running are avast!, msn, and firefox. Firefox was crashing like hell and now avast! isn’t working. Any idea what this could be?

This is all hijackthis provided:

Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 8:34:11 AM, on 3/21/2010
Platform: Windows Vista SP1 (WinNT 6.00.1905)
MSIE: Internet Explorer v7.00 (7.00.6001.18385)
Boot mode: Normal

Running processes:
C:\Program Files\Alwil Software\Avast5\AvastUI.exe
C:\Program Files\iTunes\iTunesHelper.exe
C:\Program Files\Google\GoogleToolbarNotifier\GoogleToolbarNotifier.exe
C:\Program Files\Pando Networks\Media Booster\PMB.exe
C:\Windows\system32 askeng.exe
C:\Program Files\Windows Media Player\wmpnscfg.exe
C:\Program Files\Trend Micro\HijackThis\HijackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://homepage.acer.com/rdr.aspx?b=ACAW&l=0409&s=0&o=vp32&d=0210&m=aspire_5520
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = http://go.microsoft.com/fwlink/?LinkId=54896
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://homepage.acer.com/rdr.aspx?b=ACAW&l=0409&s=0&o=vp32&d=0210&m=aspire_5520
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://homepage.acer.com/rdr.aspx?b=ACAW&l=0409&s=0&o=vp32&d=0210&m=aspire_5520
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = http://go.microsoft.com/fwlink/?LinkId=54896
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = http://go.microsoft.com/fwlink/?LinkId=54896
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://homepage.acer.com/rdr.aspx?b=ACAW&l=0409&s=0&o=vp32&d=0210&m=aspire_5520
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant =
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,CustomizeSearch =
R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings,ProxyOverride = *.local
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName =
O1 - Hosts: ::1 localhost
O2 - BHO: AcroIEHelperStub - {18DF081C-E8AD-4283-A596-FA578C2EBDC3} - C:\Program Files\Common Files\Adobe\Acrobat\ActiveX\AcroIEHelperShim.dll
O2 - BHO: (no name) - {5C255C8A-E604-49b4-9D64-90988571CECB} - (no file)
O2 - BHO: Windows Live Sign-in Helper - {9030D464-4C02-4ABF-8ECC-5164760863C6} - C:\Program Files\Common Files\Microsoft Shared\Windows Live\WindowsLiveLogin.dll
O2 - BHO: Google Toolbar Helper - {AA58ED58-01DD-4d91-8333-CF10577473F7} - C:\Program Files\Google\Google Toolbar\GoogleToolbar_32.dll
O2 - BHO: Google Toolbar Notifier BHO - {AF69DE43-7D58-4638-B6FA-CE66B5AD205D} - C:\Program Files\Google\GoogleToolbarNotifier\5.5.4723.1820\swg.dll
O3 - Toolbar: Google Toolbar - {2318C2B1-4965-11d4-9B18-009027A5CD4F} - C:\Program Files\Google\Google Toolbar\GoogleToolbar_32.dll
O4 - HKLM…\Run: [avast5] C:\PROGRA~1\ALWILS~1\Avast5\avastUI.exe /nogui
O4 - HKLM…\Run: [QuickTime Task] “C:\Program Files\QuickTime\QTTask.exe” -atboottime
O4 - HKLM…\Run: [iTunesHelper] “C:\Program Files\iTunes\iTunesHelper.exe”
O4 - HKLM…\Run: [CanonMyPrinter] C:\Program Files\Canon\MyPrinter\BJMyPrt.exe /logon
O4 - HKLM…\Run: [CanonSolutionMenu] C:\Program Files\Canon\SolutionMenu\CNSLMAIN.exe /logon
O4 - HKCU…\Run: [swg] “C:\Program Files\Google\GoogleToolbarNotifier\GoogleToolbarNotifier.exe”
O4 - HKCU…\Run: [Pando Media Booster] C:\Program Files\Pando Networks\Media Booster\PMB.exe
O4 - HKUS\S-1-5-19…\Run: [Sidebar] %ProgramFiles%\Windows Sidebar\Sidebar.exe /detectMem (User ‘LOCAL SERVICE’)
O4 - HKUS\S-1-5-19…\Run: [WindowsWelcomeCenter] rundll32.exe oobefldr.dll,ShowWelcomeCenter (User ‘LOCAL SERVICE’)
O4 - HKUS\S-1-5-20…\Run: [Sidebar] %ProgramFiles%\Windows Sidebar\Sidebar.exe /detectMem (User ‘NETWORK SERVICE’)
O8 - Extra context menu item: E&xport to Microsoft Excel - res://C:\PROGRA~1\MICROS~3\Office12\EXCEL.EXE/3000
O8 - Extra context menu item: Google Sidewiki… - res://C:\Program Files\Google\Google Toolbar\Component\GoogleToolbarDynamic_mui_en_96D6FF0C6D236BF8.dll/cmsidewiki.html
O9 - Extra button: Quick-Launch Area - {10954C80-4F0F-11d3-B17C-00C0DFE39736} - c:\Program Files\Acer Bio Protection\PwdBank.exe
O9 - Extra ‘Tools’ menuitem: Quick-Launch Area - {10954C80-4F0F-11d3-B17C-00C0DFE39736} - c:\Program Files\Acer Bio Protection\PwdBank.exe
O9 - Extra button: Blog This - {219C3416-8CB2-491a-A3C7-D9FCDDC9D600} - C:\Program Files\Windows Live\Writer\WriterBrowserExtension.dll
O9 - Extra ‘Tools’ menuitem: &Blog This in Windows Live Writer - {219C3416-8CB2-491a-A3C7-D9FCDDC9D600} - C:\Program Files\Windows Live\Writer\WriterBrowserExtension.dll
O9 - Extra button: Send to OneNote - {2670000A-7350-4f3c-8081-5663EE0C6C49} - C:\PROGRA~1\MICROS~3\Office12\ONBttnIE.dll
O9 - Extra ‘Tools’ menuitem: S&end to OneNote - {2670000A-7350-4f3c-8081-5663EE0C6C49} - C:\PROGRA~1\MICROS~3\Office12\ONBttnIE.dll
O9 - Extra button: Research - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~3\Office12\REFIEBAR.DLL
O13 - Gopher Prefix:
O15 - ProtocolDefaults: ‘@ivt’ protocol is in My Computer Zone, should be Intranet Zone
O15 - ProtocolDefaults: ‘file’ protocol is in My Computer Zone, should be Internet Zone
O15 - ProtocolDefaults: ‘ftp’ protocol is in My Computer Zone, should be Internet Zone
O15 - ProtocolDefaults: ‘http’ protocol is in My Computer Zone, should be Internet Zone
O15 - ProtocolDefaults: ‘https’ protocol is in My Computer Zone, should be Internet Zone
O20 - AppInit_DLLs: C:\PROGRA~1\Google\GOOGLE~1\GOEC62~1.DLL
O23 - Service: Apple Mobile Device - Apple Inc. - C:\Program Files\Common Files\Apple\Mobile Device Support\bin\AppleMobileDeviceService.exe
O23 - Service: avast! Antivirus - ALWIL Software - C:\Program Files\Alwil Software\Avast5\AvastSvc.exe
O23 - Service: avast! Mail Scanner - ALWIL Software - C:\Program Files\Alwil Software\Avast5\AvastSvc.exe
O23 - Service: avast! Web Scanner - ALWIL Software - C:\Program Files\Alwil Software\Avast5\AvastSvc.exe
O23 - Service: Bonjour Service - Apple Inc. - C:\Program Files\Bonjour\mDNSResponder.exe
O23 - Service: CLHNService - Unknown owner - C:\Program Files\Acer Arcade Deluxe\HomeMedia\Kernel\DMP\CLHNService.exe
O23 - Service: Acer ePower Service (ePowerSvc) - Acer Incorporated - C:\Program Files\Acer\Acer ePower Management\ePowerSvc.exe
O23 - Service: FLEXnet Licensing Service - Acresso Software Inc. - C:\Program Files\Common Files\Macrovision Shared\FLEXnet Publisher\FNPLicensingService.exe
O23 - Service: Google Desktop Manager 5.9.911.3589 (GoogleDesktopManager-110309-193829) - Google - C:\Program Files\Google\Google Desktop Search\GoogleDesktop.exe
O23 - Service: Google Update Service (gupdate) (gupdate) - Google Inc. - C:\Program Files\Google\Update\GoogleUpdate.exe
O23 - Service: Google Software Updater (gusvc) - Google - C:\Program Files\Google\Common\Google Updater\GoogleUpdaterService.exe
O23 - Service: EgisTec Service (IGBASVC) - Egis Technology Inc. - c:\Program Files\Acer Bio Protection\BASVC.exe
O23 - Service: iPod Service - Apple Inc. - C:\Program Files\iPod\bin\iPodService.exe
O23 - Service: MyWinLocker Service (MWLService) - EgisTec Inc. - C:\Program Files\EgisTec\MyWinLocker 3\x86\MWLService.exe
O23 - Service: NTI IScheduleSvc - NewTech Infosystems, Inc. - C:\Program Files\NewTech Infosystems\Acer Backup Manager\IScheduleSvc.exe
O23 - Service: NTI Backup Now 5 Backup Service (NTIBackupSvc) - NewTech InfoSystems, Inc. - C:\Program Files\NewTech Infosystems\NTI Backup Now 5\BackupSvc.exe
O23 - Service: NTI Backup Now 5 Scheduler Service (NTISchedulerSvc) - NewTech Infosystems, Inc. - C:\Program Files\NewTech Infosystems\NTI Backup Now 5\SchedulerSvc.exe
O23 - Service: NVIDIA Display Driver Service (nvsvc) - NVIDIA Corporation - C:\Windows\system32

End of file - 7869 bytes

Used speedfan to determine heat. Core is around 30-40C, GPU is normally mid to high 60’sC.

This has been happening to me for years now as well. It usually happens when I’m watching a video (which makes using YouTube a pain -_- ) but sometimes it happens almost as soon as I turn it on. Any ideas?

Note that my PC is old (it’s an IBM clone from 2002) so it might just be that it’s too obsolete. (I aim to buy a replacement… as soon as I can spare the money.)

Mine hasn’t done it yet today thankfully.

Wilf: post specs

Cro: This stuff you mean?

AMD Sempron 2200+
1.49 GHz, 224 MB of RAM

Windows XP Home Edition
Version 2002
Service Pack 3

Wilf: He probably meant something like the Hijackthis Log file, so as to get a handle on what may be causing it. Although you do have a very old computer…try to run some stuff if you can. (You have a VERY low amount of RAM.)

Cro: Forgot what I was gonna mention on your log file, but figured some file or two could be messing with things. I’d use CCleaner to clean up some stuff, and check the stuff that runs on Startup, and get rid of stuff you don’t need to show up (there’s usually a handful of useless stuff).

Other than that, scan for stuff, and clean up files (CCleaner, Defraggler, Spybot, Malwarebytes, etc.) Hopefully, this may help as to revealing what may be the cause (or could just eliminate it altogether).

Ultra: Yeah, I suspect the low RAM is the cause of at least some of my problems. I WAS going to get some extra memory installed last year but then I moved and had to spend the money on other stuff. I hope to get the money I need to upgrade soon.

On a related matter: every time I run my CCleaner, it brings up “compressed old files”. But does that mean that: it will compress my old files, OR that it will erase already compressed ones? I’m not sure which is why I’ve never used that option. Which is it, do you know? I don’t want to risk losing something I might need later.