Cheers for the reply. Got back home and switched it on, wooohooo, no noise, only for it to not work at all. Big blue screen saying Windows detected and error and could not boot up. Tried starting it in safe mode and it won't even do that, just goes back to the blue screen of death.
I'm a complete computer novice in terms of this sort of stuff. Does anyone have any idea of how I can try and get it to work or should I just admit defeat and take it the repair shop??!!!