Computer restarts itself after startup?

is there a fan on anything else like the chipset or somthing .. it could be a virus also ...

This does sound like a problem caused by overheating, the motherboard is exceeding its fault tolerance and restarting the machine. If all the fans are running as you say, I would check the make sure the heatsink and fan on the processor is securely anchored in place, I have seen motherboards where after time the mounting bracket for the processor heatsink has cracked allowing the heatsink to shift just enough to not make proper contact with the processor, thus the processor overheats quickly. Also make sure there is little to no build up in the processor heatsink below the fan, dirt, dust, etc trapped in the heatsink traps additional heat in the processor. You can use canned air, I also recommend using a small firm bristled hobby paint brush to help remove the buildup in the heatsink, using nylon, silk, or camel hair paint brush bristles won't hurt computer components.

If you check the heatsink on the processor and make sure the heatsink is clean, and the problem still exists, the next time it starts to reboot, press the pause/break button quickly, it might show you a blue screen telling you what kind of problem windows is experiencing. It is possible that perhaps a windows file has become corrupted that is required at start up and this is causing windows to repeatedly restart to correct the error. If you think this is a possibility, you can insert your windows disk in the CD drive, tell the system to boot from the CD, and select the option to repair your current installation of windows, this won't remove any installed programs, but it will refresh all system files, and you will have to re-install all updates etc.

When checking and cleaning the components, make sure you check the video card if you are using an addon video card, if the build up as stopped the fan cooling it, this too can cause system instability.

The same thing happened to me! (such a pain!)

I found out it was because the battery had run out. You can try replacing the battery or if that doesn't work it could be a loose connection. To fix this place some aluminium foil in between the battery and the socket.

If its not the battery it could be the bios. The bios is a small program that is made just to boot up the system. To get into the bios press the delete button continually and it should pop up. When it comes up select "PC health" and make sure nothing says 'fail' ( you can also check the battery here). Now check in the standard CMOS for the same thing.

If none have this has proved anything its probably just your hard drive being too old. You can replace it but its probably better just to buy a new one.

Hope that helped- good luck!

Those temps are not too bad. At least not enough to cause restarts. The most likely suspect is bad memory. Trying to access a bad spot in your system memory (RAM) can cause the computer to freak out and restart. The best way to find the culprit is to pop open the system unit, remove (or replace) one RAM stick and see if the problem is solved. Run your system for a while and see if the problem goes away.

There's a setting buried in Windows XP that tells your computer to restart when a system error occurs. If you turn off that option, you may solve your automatic reboot problem.

# Click Start, then open Control Panel

# Click Performance and Maintenance

# Click System

# Click on the Advanced Tab

# Click Settings in the Startup and Recovery section

# Uncheck Automatically Restart in the System failure section

Note that this may prevent the system from restarting, but it can also mask the true problem. As an alternative to this measure, consider what has recently changed on your system. If you have installed new hardware or software, remove it and see if the annoying restart persists. Sometimes downloading the latest driver software from the manufacturer's website will fix hardware incompatibility problems that cause restarts.

I run motherboard monitor 5 to check system temps, install that first to be sure you're getting accurate reading.

http://www.dvhardware.net/modules.php?name=Content...

Yeah that's way too hot right at boot time, it should be more like 80/90 degrees F. I would tare down the system completely, remove all fans, cpu fan/heatsink, everything, and give everything a very good cleaning. I do this several times a year, I even take my ATI X850XT video completely apart and clean it. It makes a huge difference in temps, start there. If it continues after the cleaning your processor may be fried.

it is really a problem created by low memory availablity

but

who does so

right

a Backdoor trojan

named pws.x-vir

it restarts computer when u start a particular application

or when u try to open an application over 5mbs

use Mcafee 10.06.02 beta avialable free and it works

or u can use Norton Antivirus 2008 beta

Press F2 when your system boots, let it sit for a few minutes. If it does not restart your problem is not heat.

Just exit without making any changes.

You might want to review this article:

http://www.gamegiants.net/article_info.php?article...

sounds like mine i took it in and it was the ram that was defective