Possible Duplicate:
My computer boots to a black screen, what options do I have to fix it?
I just replaced Windows with Ubuntu 12.04. It installed correctly, but but when I tried to restart the computer to run of the hdd instead of my usb, the OS didn't boot. A message came up on my monitor saying "Change resolution to 1920x1080 - 60Hz". Can anybody help? I am very inexperienced with this.