hi guys, i'm new here and this is my first post. i know that this problem has been posted before but i can't find the right answer at the moment. i have a vista starter and for the past few days my PC has not shut down normally. The screen goes "blank" after the 'Windows is shutting down' page and I have to press down the power button eventually. I've scanned the PC with Kaspersky anti-virus and anti-spyware softwares but found nothing. i just restored my PC and i don't wanna go through that process again. any infos or help will be much appreciated. thanks in advance!