crwdns2934241:0crwdne2934241:0 mayer

crwdns2934249:0crwdne2934249:0:

Hook it up to an external monitor and see if the problem persists.  This may be a Nvidia GPU problem, which is covered by Apple.  Please give the last three letters of your serial number so we can confirm if your model is affected.

crwdns2915684:0crwdne2915684:0:

open