Have a new Pc with Asrock FM2A55M-HD+,
AMD A55,Socket FM2+, 2x DDR3,
GbLAN, 6xSATA2-Raid, VGA, DVI, HDMI, 1xPCIe26 3.0,
ax PCIe1, ax PCI, uATX
AMD FM2+A10-7700 Black Edition, 4x3.40GHz, boxed
Scythe Shuriken Rev.B
TeamGroup Elite Series DIMM 8GB, DDR3-1600,
Western Digital Caviar Green 1000GB, WD 10EZRX, SATA 6 GB/s

In my former PC there was also Asrock mainboard,

Router connection with Fritz box OK,

When I switched to the new PC and attached Network cable for Lan
the new board had "no-connection with router " !!!!!!!!!!!!!!!!

No chance whatsoever !!!

So I put in a PCI network card and it all worked ok

But why did my new PC not answer to the Lan network ?????

Are there setup possibilities in the UEFI at boot up ???

Thank you very much