Hi... I have the same issue... hard reset didn't work, because I can't access to the menu while holding volume up+menu+power (the phone doesn't vibrate either); however I can go into the downloading mode (menu+volume down+power) but while trying to flash it with an original ROM (using Odin), it comes to a Fail download; it happened overnight while charging, woke up and phone was on the black&white Galaxy screen. Is there any way to restore everything, considering that the volume up+menu+power doesn't work?... thanks in advance!