You can try doing a PRAM reset. To do this shutdown your MBP. With your lefthand hold down the option+command keys. Power on the MBP, and immediately with your righthand little finger hold down the P key and with your righthand index finger hold down the R key. So you have the option+command keys and the P&R keys held down. Wait until you hear the Apple chime twice, release the keys and let the MBP boot up. Try that and see if it helps. Follow up and let us know if that worked for you.