I had this issue (corrupted BIOS) with a Lenovo Yoga 460. Lenovo publishes an ISO that can be used to update the BIOS (you can burn the ISO to a disc and boot it). The ISO for your specific machine (if available) can be found at support.lenovo.com. I was able to restore my BIOS from the ISO.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1734147 Title: Ubuntu 17.10 corrupting BIOS - many LENOVO laptops models To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1734147/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs