thanks for your help and advice and will act accordingly in future
bit of an update: got my brother to open the screen area and the cable was all in tact so its not a broken / loose cable.
got an email off Dell and they say they will replace the screen under warrenty and to arrange pick up. this pick up will take 10-14 days to get the machine back to me from "pick up" or you can take advantage of an Engineer visit who will repair it at your home for £29.
considering i only had the standard warrenty RTB i have decided to have an enginner come out. i actualy think £29 is very reasonable.
anyone ever had one of these £29 engineer visits ?
PS- the reason i was getting stressed was i use the laptop at work (security) during breaks for tv and internet.
i work 16hour shifts and its the only thing that keeps me sane lol.
anyway enough of my waffling...