restart

[Synchrotone]

Problem- My computer restarts every time i log on. it restarts about 5 minuts after log on. Every thing Loads right and system acts as if normal but then a few minuts later it restarts i have never had this problem before i am curently using my laptop

Info- windows XP pro edition
E-machine
it started doign this after installing this product
http://www.intervideo.com/jsp/MediaOne_Profile.jsp
even when i dont log on it does it actuly