Hi there thanks for the replies, I'm not sure if the system locks up as I haven't been playing music etc when it has happened. It doesn't respond to trying to open task manager though.It doesn't really happen often enough for me to test this though, It's happened around three times since I bought it in September. If I remember correctly the first time it happened it was a white screen with black lines, does this make any difference?
Raybay - When you say 'we see lots of them' do you mean here on techspot, or where you work or something? Also if it is a failed screen does this mean I will need to get a laptop replacement or just have it repaired, its still in warranty so I guess that's plus, although I guess it will be hard to prove it faulty as it's an intermittent problem.
Thanks for the help guys,
Will
P.S - I will have my screen gleaming for my next post!