Toshiba Satellite laptop won't get past Leading Innovation start-up screen. F2, F8, F12, 0, hard shutdown, battery remove, days of charging all tried and did nothing..... I have read the other forum posts but those suggested solutions don't seem to be doing anything. There is no USB or anything plugged into it. Windows 8.1 on it. Last thing I remember it doing was trying to defrag......Help!