Hi team wonder if you can help.. Ive decided to upgrade my 2011 macbook pro. got memory from crucial site, so good stuff and for my model. so took off the back, used an antistatic mac, plunger to disconnect battery. plunger plastic to take out old ram. Put in new ram. and put back together. Now system starts up better but trackpad erratic?? tried already reseting pram and smc. also put in old memory and the same. can anyone shed some light on my next moves or why.