The easiest way to start masternode.I did on Windows like this:
Settings das.conf in the wallet where you have 1000 coins.
rpcuser=master
rpcpassword=pass
rpcallowip=127.0.0.1
# --------------------
listen=1
server=1
daemon=1
maxconnections=24
# --------------------
masternode=1
masternodeprivkey=7sCVAK*****************************************
externalip=you IP
Masternode.conf leave blank
In the console after synchronizing the wallet, you type "masternode star password".
And maybe you need to open port 9399.
http://i.imgur.com/py5SwUQ.png 