the only way i can get some kind of picture is by running my computer in safe mode
i started my computer again in safe mode from boot and ran the windows memory diagnostic test. It restarted my computer and performed 2 tests. When it got to 100% completion it said under the status bar that it hadnt detected any problems.
It said it would post the results again after windows starts up but, of course, after it was done it loaded win 7 straight away but not in safe mode so the monitor just went black after the windows loading screen had finished loading.
So it didnt detect any problems through there, and i also looked in device manager for the vga adapter under display adapters but all it comes up with is my graphics card. I checked under the other headings but cant see it under them either
The laptop screen isn't displaying much... it's on but it's just either a blue flickering screen (on and off) with some black lines through it or it might show whats on the monitor as a quick flash at timed intervals (kind of like a quick pulse once every second or so) but most of the times it black with a bunch of grey pinstripe lines taking up the righthand side of the screen from top to bottom
you guys have been awesome with all your help,
I'll read up on those diagnostic tool links that gbhall put up and get back to you guys. It's not my laptop so I'll have to have a read, talk to the owner and then get back to you guys in a day or so to let you know how it all went.
Thanks again to everyone for all the input so far.
EDIT : A good question to ask would be is there anyway that I can get the video chip replaced / upgraded so they can keep their system in tact " as-is " ? Would it be cost effective and not too much of a big job now that we've discovered the root of the problem ? Whats everyones opinions ?