Firstly I apologise if this is in wrong area of forum. I've just done a reinstall of vista on my advent 5411 laptop. No real reason other than it running slow. We use the laptop a lot for streaming movies from a server upstairs to the laptop in question and view it using the hdmi socket on the laptop to view the image on a samsung lcd tv in the living room. until the reinstall everything worked perfectly but now when i connect everything up and use the Fn + F4 keys all i get is a blinking laptop screen everytime the keys are pressed. this is starting to really annoy me as i cant seem to find an answer on the internet. nothing else has changed with the set up from how it was previous.