crwdns2934241:0crwdne2934241:0 dejohn17

crwdns2934249:0crwdne2934249:0:

Our computer was having the same problem.  Just before we went out to buy a new mac, my wife noticed that there were some screws loose on the bottom of the computer.  When she tightened them it fixed the problem.  No more red lines.  Try checking for loose screws.

crwdns2915684:0crwdne2915684:0:

open