I have a lenovo ThinkCentre M91p Graphics - Driver: Intel Sandybridge Desktop Processor - Intel Core i7-2600 cpu 3.40GHz x 8
After installing Ubuntu 12.04 LTS, when I boot up I only get a blank screen with a blinking cursor in the upper left of the screen. No keys affect the screen.
What I've tried. - Boot repair utility - set the 'nomodeset' option