A1347 starts, but screen stays black
Ubuntu was installed by the previous owner.
now the Mac mini has the following behaviour:
start up after power button is pressed.
Fan starts spinning, HDD runs, ODD runs.
white led is on.
Shortly after this the white led and the fan switch off.
And automaticly go on again.
Mini stays on after this re-boot/reset.
But the screen stays black.
As well on HDMI as on minidisplay port.
is this caused by the ubuntu installation?
how to recover ??
replacing the HDD does not solve the problem !