First of all open Control Panel - System - Advanced and click on the
Settings button in the Startup and Recovery (bottom) section. In the
Startup and Recovery window click on the checkbox for "Automatically
restart" to clear it. Click on Apply and OK as needed to exit.
If the "Automatically restart" checkbox is already cleared or if the
problem persists after clearing it then see MVP Jim Eshelman's
Shutdown Troubleshooter web page for Windows XP at
http://aumha.org/win5/a/shtdwnxp.htm
Good luck
Ron Martell Duncan B.C. Canada
--
Microsoft MVP
On-Line Help Computer Service
http://onlinehelp.bc.ca
"The reason computer chips are so small is computers don't eat much."