Hi, I'm working on my brothers laptop, its a Gateway ML6720. Anyway, this computer is like 3 months old and worked fine until now. When I turn it on it shows the loading bar, but when that's done it just goes to a black screen and stays. It will not boot completely. I've tried starting it in safe mode and repair mode but it still just freezes at a certain point. I don't know what he did to it prior to this happening, probably nothing but there's no good reason why it shouldn't boot. If someone could please help it would be great. Thanks.
Please help!!!
OS: Widows Vista Home Premium
CPU: Intel Pentium Dual Core T2310 1.46 GHz