Mid 2012 macbook pro glitching, freezing, overheating
Starting a few weeks ago, I noticed a change in my mid 2012 macbook pro. My laptop was losing charge EXTREMELY quickly, I would charge the laptop to 100%, and just an hour later (after not using it, but the lid closed and it was sleeping) it would be up to 60% charge, then when not in sleep and on, it would lose energy extremely quickly. I always make sure that unecessary background apps are not running--so that was not the problem. This problem went away after a week, but it was the first signal that something was wrong with my laptop.
Next, the laptop was having problems with waking up from sleep, I did an SMC reset and this problem was fixed.
After that, the laptop started glitching (static and banded lines on the bottom of the screen) and making this clicking noise when I was streaming video fullscreen on Netflix. I thought at first, that this was a problem with Silverlight, and reinstalled the silverlight plugin (several times). Then I noticed that the computer would glitch when I was streaming full screen on Netflix and picked up the laptop (moved it from a flat surface). This signaled to me that the problem was perhaps not software, but a hardware issue. I verified the disk and did a permissions report and neither were curative.
Further support that the problems are with hardware rather than hardware came to me when my computer presented itself with a fourth issue: the laptop, when being lifted or moved from a static surface, would sometimes freeze entirely and make the same clicking noise. This problem was not during fullscreen streaming, but had spread to when I was simply using more than one app at the same time (e.g. having Chrome and Word open together). When this happenend, the only solution would be to power down the computer and restart.
Finally, while sleeping with the lid closed in my backpack, I hear a whirring noise--I pick up the laptop and it was hot to the touch, overheating with the fans running on high speed.
I have no clue what is going on. I have taken the computer to my university's mac shop and they have suggested it is a logic board issue and I should give the computer in. I have scoured the forum for an answer of what is happening and am determined to find one. So I pose the problem to you--any help would be appreciated. Thank you.
MacBook Pro (13-inch Mid 2012), OS X Mavericks (10.9.2)
