i had mac installed in a pc. I had to uninstall it and installed ubuntu. now the pc wont load automatically using the HD. its trying to load the network interface first but that is not successful.

i have disable the network boot,but still the PC shows boot failure. So now i had to load the ubuntu directly using boot menu when the computer restarts.

{ checked bios for boot device priority,checked disk configuration for native (its native) . Pls help !!

board is intel DG41RQ