I just bought a new ASUS S46CB-WX058H using Windows 8 system (64 bit). On the 3rd day, I restarted the computer after updates done automatically by Windows. Near the end of the updates, the font suddenly changed to Wingdings. After restarting, everything was in Wingdings including date and time. I tried to log in to my local account using the on-screen keyboard. It accepted my password but it could not load Windows normally. Nothing appeared on the desktop, just a black screen with an empty task bar at the bottom. I can see and move the mouse but neither left-click nor right-click shows any response. I am also unable to shut down unless I long-press the power button. Is there any way that I can reformat my laptop? I have tried both F8 or F9 during reboot but there was no response. Is there any other methods that I can try? Thanks