I did a similar thing last week with one of my PC's to see what difference it would make. Similar terminal result, however after BIOS did its thing I was left with a black screen and flashing cursor in the top left corner. It didn't even try to boot to windows. I quickly put things back as they were and all is working now. Can only guess that the result achieved by selecting the high performance settings varies depending on the other hardware installed. I suggest you go to the web page for the manufacturer of your motherboard for an explanation of this setting.