I CANNOT GET INTO MY ACER E725, LAPTOP. I HAVE TRIED F2, F8, AND IT BRINGS ME BACK TO THE ABOVE SCREEN. TECH INFO; STOP: 0X00000050, (0X00000080, 0X00000000, 0X90E90B13, 0X00000000. I HAVE NO BACK UP DISK, REPAIR DISK, ETC...... CAN SOMEONE TELL ME HOW TO FIX THIS PROBLEM. THANKS