I am new in this community. My name is Mahipal Mittal or you can say Mikel. I am facing problem with my laptop and for that I need your guidance. I have installed the window 8 release preview. Whiile running, it automatically get locked within few minutes and the system halts. Only I can do is scroll the mouse. I have tried Ctrl+Alt+Del but it does not work. Anyone who can guide me to recover from this?