WinXP won't shutdown all the way

[Kevan]

When I want to shutdown my computer, it just keeps
restarting itself. Strange. It's like it's set up to
restart itself when you click "Shutdown"! I reinstalled
Windows XP and that solved the problem for a little
while. Then it started happening again(no viruses). I
would like to know why this is happening and how to stop
it if it's possible.
Any suggestions or help would be greatly appreciated!

 

[Chris Lanier]

Windows XP Restarts When You Try to Shut Down Your Computer
http://www.kellys-korner-xp.com/win_xp_restart.htm

 

[Alex Nichol]

When I want to shutdown my computer, it just keeps
restarting itself.

You have something that is crashing on being asked to close - and the
system's 'automatically restart' is cutting in. Turn this off: in
Control Panel - System - Advanced, click Settings in the Startup and
Recovery section. There uncheck 'automatically restart'. You can also
usefully change the 'write debugging information' to (none) unless you
are actively needing a dump for debugging something, or to 'minidump' if
you are getting errors that you wish to report on to Microsoft. You
may now get a Blue screen failure instead, but at least will get some
guidance as to what is happening