Alright, here's the problem. I turn on my computer, and it starts up fine, but the screen is black. It stays black. I have an HP Pavilion dv9000t, and I've only had it since January. I bought it refurbished, but haven't had any problems until now. Also, I have no control over my cursor because the touchpad has disabled itself. It's also stuck on mute and my touch-sensitive controls don't work at all. I can kind of see my desktop, and I can bring up and see windows, but I can't click them because my cursor won't work. Help?