This same exact thing happened to me earlier this week when installing a Ubuntu Desktop 12.04 LTS 64 bit on a new Lenovo ThinkCentre box. The only thing I coul

This same exact thing happened to me earlier this week when installing a Ubuntu Desktop 12.04 LTS 64 bit on a new Lenovo ThinkCentre box. The only thing I could do was go into the bios and switch it to Legacy instead of UEFI and then reinstall Ubuntu. Then it worked fine. See more evidence of this: http://askubuntu.com/questions/141879/error-1962-no-opertating-system-found-after-installing-12-04-lenevo-thinkcentre http://askubuntu.com/questions/141879/error-1962-no-opertati... http://askubuntu.com/questions/91484/how-to-boot-ubuntu-from-efi-uefi http://askubuntu.com/questions/91484/how-to-boot-ubuntu-from...