Unbootable system after update

[filoG]

Hello mates. I'm using latest Ubuntu 12.10 edition. Today after system update, after trying to reboot the system says "kvm disabled by bios". After that the Ubuntu logo seems to be loading, screen goes crazy and then finally black screen. What should I do to restore system to its previous state?

[ubudog]

Is this a virtual machine?

Are you able to boot Ubuntu into recovery mode using the item in the GRUB boot menu? You can access the GRUB boot menu by holding down the shift key at startup.

Also, do you have an option for KVM (or just virtualization) in your bios?