After booting into Linux, the Marvell gigabit adapter no longer works for network booting (PXE) or Windows.
The Marvell driver included with SuSE 10.0 puts the gigabit controller in a state that is incompatible with PXE and Windows.
In order to use the adapter under Windows and PXE again, remove the power cord and battery from the laptop. This will reset the adapter.