HELP! plz

[Nikki]

Ok i dont know what exactly this problem with my computer
means but ill try to explain it my best. Once in a while
this message pops up onto my screen and says its going to
shutdown in 1 min... n i cant do anything about it excet
wait, n it has to do sometihng with the AUTHORITY/SYSTEM
so ya plz email me back if ui have any idea what it is??

 

[Jupiter Jones [MVP]]

Nikki;
You most likely have Blaster.
Follow this to get rid of Blaster:
http://www3.telus.net/dandemar/blaster.htm