Either right click on the device manager entry for the new card and see in the properties if there is a driver installed for it, or look in the nvidia panel to see if there is one listed for it.
It should have detected the new hardware and either installed a driver automatically or asked you for one.
Assuming its ok SLI should be disabled in the nvidia panel options.
Probably if it was enabled it would not be happy because one card runs faster ie is overclocked and out of step with the other.
The manual mentions the need for identical cards but it shouldnt matter in this case because the cards are not physically linked/bridged.
Perhaps also look to see if a card has also been set to handle Physx rather than graphics.
Other thoughts are to do with the card order in the pcie slots in respect of 8/16x and pcie2/3.
Perhaps try the 2x570 in 1+4 slots and 560 in 6,or alternatively the 570 in 4+6 with 560 in 1
Make sure you are not extending the desktop UI across these cards as well.
Perhaps you need to disable the built in graphics in the bios.
It looks like it is active in the screen shot. Where is your monitor plugged in?
This may be a special Asrock feature because I dont think Windows usually allows built in + card together?? Perhaps built in + 3 others is too many?
I suggest you study p37 and p74 of the Asrock mobo manual for bios settings in relation to this.
Possibly there is a bug fixed in a later bios version? you will need to check that yourself.
HTH
