Hi KenB,
Thanks for the advice although sadly already tried that, even forcing an install of the latest driver released by intel in March this year hasn't helped. Nothing seems to be correcting it, could not enough RAM be the issue? I'm running standard stuff, Chrome, Word, Outlook etc, nothing over heavy but RAM is usually over 50% used constantly. As you may of guessed im kind of clutching at straws here as nothing 'normal' has diagnosed it? have you seen graphic issues appear like mine before? Very strange in my opinion. Any other ideas at all??? PS: external display doesn't change anything either, lines still there. :-(