Failed to handle ACPI object

Hi everyone,
my Lenovo Ideapad 100 froze today while just watching a video on YouTube.
Also i didn't reacted to the keyboard or mouse.

After waiting for about 20 minutes I forced a shutdown by using the power button.
When I wanted to boot after that the following message appeared:

I've have already tried booting while editing the boot option by adding the following orders:

  • acpi=off
  • nosetmode
  • `xforcevesa
  • forcepae

I have also read that maybe the graphic driver is the source of the problem. So i'd like to switch it, but I am not able to log in to my account...

Thanks for any help.