Hi Patrik, these might seem stupid but
You did get the 2 software disks when you brought the cyberstorm? and installed them before fitting the card?
Also what size is the ram are they all the same size?
eg 2*8MByte in ram-bank 0 2*32MByte in ram-bank 1
they can't be mixed between banks eg 1*8Mbyte and 1* 32Mbyte in ram-bank 0
are you getting power to the board, is the small CPU fan running when the computer power is turned on.
Andy