My com shutdown automatically...
I will provide some info of my com: (cause i saw the scary flash show of "Posting and You")..lol
-window XP pro
-using avg anti virus
-using spybots search and destroy

i have try doing the alerter, but there is no alert and the com just shut down..
There is no virus detected when i scan my com
There is also no spyware  detected..
I dont think is the overheat problem..

what should i do?? to stop the auto shutdown...Besides a virus or hacker connecting remotely to your computer, a hardware or OVERHEATING problem MIGHT be to blame.  Make sure your computer case or laptop is not warm to the touch.  If it is, try opening it up and using a can of antistatic compressed air to blow dust out of the case and away from the cooling vents. While you have the case open, verify that all of the cooling fans are spinning when the power is on.   

Also, if you recently added new hardware, the wattage requirements of your computer might now be overtaxing the computer's power supply, which can also cause the computer to reboot.  You might need to install a PSU with greater wattage output.

My cooling fan is not moving when i on my com..do i have to buy another cooling fan?If you don't you will soon end up BUYING another computer.Yep.  Heat kills PCs.  At LEAST it is a quick and painless death for the system.  Hopefully he will only have to replace the central processor to resurrect this computer.