Computer keep on restarting

My computer keeps restarting just before i get to desktop. I'm not a computer geek so I really need help thanks :D

See this Thread for more help : http://forums.techarena.in/windows-xp-support/24657.htm
http://forums.techarena.in/windows-x...rt/1002198.htm
http://forums.techarena.in/hardware-...als/542970.htm
http://forums.techarena.in/windows-software/1152076.htm

You can change the default behavior by right clicking on “My Computer” and choosing “Properties”. Goto the “Advanced” Tab and under “Startup and Recovery” press the “Settings” button.

Under the “System Failure” box there will be a checkbox saying “Automatically Restart”. Untick this box and click Ok.