Hmmm... Media-Markt PC? :-)))
Your board is OEM made by Asus for Fujitsu Siemens Computers.
Bios Updates can be found here: http://support.fujitsu-siemens.de/de/support/downloads.html
On that site, use "a8ne" in Volltextsuche to get all A8NE-FM related files listed.
Latest BIOS update is "A8NE-FM BIOS REVISION 1011 ISO-Image"
Do NOT use A8N-E bios updates on this board!
For the drivers, go to nvidia.de and download latest "NF4 Series AMD" chipset driver package (6.86). Also download latest Forceware driver (93.71) for nvidia gforce based video cards, if you have one installed.
When installing the NF4 chipset driver, you are prompted to install the "nvidia network management suite". To avoid trouble, You should NOT install that feature :-)