Does this happen when you are trying to install Ubuntu and/or booting from a LiveCD? If so, can you see if this also happens with the latest Trusty daily build, which can be downloaded from:
http://cdimage.ubuntu.com/daily-live/current/
Does this happen when you are trying to install Ubuntu and/or booting from a LiveCD? If so, can you see if this also happens with the latest Trusty daily build, which can be downloaded from:
http:// cdimage. ubuntu. com/daily- live/current/