system restarts abruptly

[Guest]

whenever i enter command prompt or try to download files from theinternet, my
system restarts? what's causing this and how to fix it? thanks

boneux

 

[Detlev Dreyer]

whenever i enter command prompt or try to download files from
theinternet, my system restarts?

Is this a question? Why don't you disable the automatic restart in order
to obtain an error message instead.

"Windows XP restarts unexpectedly or restarts when you shut down the
computer" http://support.microsoft.com/?scid=kb;en-us;320299

what's causing this and how to fix it?

That depends on the error message (see above).