My computer is frozen on my personal screen saver with only the time and date and network symbol on the bottom corner of the screen. My mouse and keyboard won't work. When I turn off my computer using the button on the tower (which would normally on windows 7 take you to the safe mode screen) it just restarts to the same frozen screen saver and I can do nothing. I tried starting the machine with the windows 8 driver disc in the drive but again nothing just the screen saver. I have no access to any programs, tiles anything, please help. I am using a Lenovo H520s 8gb ram 64 bit with windows 8 built in.