This is what I just used..
ethminer.exe --farm-recheck 200 -G -S us1.ethermine.org:4444 -FS eu1.ethermine.org:4444 -O 0x0fAea99B63369dc4eaeB50217e1DED7FDb91F551.Miner1
There isn't an error now. It's like the the program runs, but doesn't start mining.
C:\Users\Miner1\Downloads\ethminer-0.13.0-Windows>ethminer.exe --farm-recheck 200 -G -S us1.ethermine.org:4444 -FS eu1.ethermine.org:4444 -O 0x0fAea99B63369dc4eaeB50217e1DED7FDb91F551.Miner1
C:\Users\Miner1\Downloads\ethminer-0.13.0-Windows>
Can you run the following command so ethminer lists out the cards it detects:
ethminer.exe -G --list-devices
Doesn't show anything...