Black screen after windows start up. Woke up this moring opened my book and started the computer and then it happened. Has the logo and moves but no sound. (not even sure if its off mute or not) has the mouse in view and can move it. It was connected to an external monitot when this happened. Safe mode dose not work. New solid state hard drive was put in like 2-3 weeks ago. Tried takeing battery out and power for 30 seconds, battery test...Battery is good. help please, iam out of ideas...............