Gerald;
Disconnect the network cable.
Does it now shutdown OK?
If yes go to BIOS and look for something like "Wake on LAN" usually
under Power tab.
Disable it.
Otherwise:
http://aumha.org/win5/a/shtdwnxp.htm

Signature
Jupiter Jones [MVP]
An easier way to read newsgroup messages:
http://www.microsoft.com/windowsxp/pro/using/newsgroups/setup.asp
http://dts-l.org/index.html
> Every time I turn off my system, it immediately starts to
> come back on again. My Dell system automatically turned
> off when I selected "Turn Off". However; for reason it
> has started to recycle back on and I have to manually
> turn the system off. Any ideas?