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Laptop Shuts Down On Its Own


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#1 huehefner

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Posted 21 May 2007 - 12:54 PM

my laptop keeps shutting down at intervals... and then it would not come on.. it usually goes int osomething looking like ROM mode.. then i have to choose the last best known start up configuration..but it stills keep cutting out on its own..what can i do??

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#2 quietman7

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Posted 21 May 2007 - 12:59 PM

The symptoms you describe could be malware related or they could be due to hardware or overheating problems caused by a failed processor fan, bad memory (RAM), failing power supply, underpowered power supply, CPU overheating, motherboard, video card, drivers, dirty hardware, etc. If the computer is overheating, it usually begins to restart on a more regular basis.

Check for malware by performing a full system scan with your anti-virus in "SAFE MODE". Also download and scan with MS Malicious Software Removal Tool and AVG vcleaner. Some rootkits can also trigger BSODs, shutdowns and error messages so download and scan with AVG Anti-Rootkit.

If your not finding any malware then its sounds like the latter problem. When was the last time you cleaned the inside of your computer? Dust restricts the airflow and prevents proper cooling. This in turn can cause overheating and faulty processor fans which can result in unexpected shutdowns, random restarts, booting problems, etc. Open your machine and make sure the fans are working and the heat sink on the processor is not blocked with dust or debris. Remove the CPU's cooling unit and clean the fins on the heat sink that sits under the CPU with a can of compressed air. You can also remove the cards, RAM modules, clean the contacts and reseat them. Check your connections and fans to make sure they are working properly and monitor the temperature. See "Cleaning the Interior of your PC" and the "Illustrated How to Replace an AGP Video Card" (you can also use it as a guide to clean & reseat).

In Windows XP, the default setting is for the computer to reboot automatically when a fatal error occurs. You should be able to see the error by looking in the Event Log. An alternative is to turn off the automatic reboot so you can actually see the error code/STOP Message when it happens - this is also known as the Blue Screen Of Death (BSOD).

To change the recovery settings and Disable Automatic Rebooting, press WINKEY + Pause/Break keys or right-click on My Computer and select Properties > Advanced tab.
  • Under "Startup and Recovery", click on the "Settings" button and go to "System failure".
  • Make sure "Write an event to the system log" is checked and that "Automatically restart" is UNchecked.
  • Click "OK" and reboot for the changes to take effect.
Doing this won't cure your problem but instead of instead of crashing and restarting you will get a blue diagnostic screen with information displayed that will allow you to better trace your problem.
See "Extract troubleshooting info from Windows XP BSOD error messages" and How to Find BSOD Error Messages.

Download and run Motherboard Monitor 5. If Motherboard Monitor's seems to be reporting high temperatures for your CPU check to see what your max CPU temp is from here.

There are suggestions for troubleshooting power supply, video card, CPU, RAM, MB and hard drive here and here.

Another option is Microsoft's Online Crash Analysis. The Windows Memory Diagnostic tests the RAM for errors with a comprehensive set of diagnostic memory tests. Also see Memtest86+ and Memtest86.

Edited by quietman7, 21 May 2007 - 01:16 PM.

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