It sounds like you have already troubleshot the issue and identified it as a broken bios. As such, there isn't really anything we can do on this end. For the sake of completeness though, could you post the exact boot catalog before, and after rebooting?
** Changed in: ubiquity (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1302939 Title: Installing Ubuntu 14.04 on Lenovo H520 leads to unbootable system To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubiquity/+bug/1302939/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs