Hi guys, I'm pretty desperate. This is what happened: I got a macbook pro '13 late 2011 and unfortunately it always presented the same problems that the '15 and '17 but Apple doesn't volunteer to repair this one. After using it for only 6 months the storage unit died and I had to replace it. About a year later I added more RAM and it worked just great for more or less a year. Except that it started doing some weird things again, like screen glitches, getting way to hot and being abnormally slow to even open a chrome page. I took it to an apple authorized assistance and they eventually told me that the motherboard was damaged and had to be replaced and the OS was bugged and needed to be reinstalled. At this point I knew I should just buy another computer, but I live in Brazil and everything is more expensive here (mind, the same mac that in the US that costs 1200 dollars would be around 3000 us dollars here). So I decided to have my old one repaired. It seems to be working fine now, but it still has some screen glitches when it's turned on and some difficulty with basic things (sometimes it gets overwhelmed with basic tasks, like mail or if I have photoshop and indesign opened together, when before it performed just fine). It's only been 3 months from the motherboard replacement and I'm worried again that's something is damaged. I mean, what is wrong now? What should I do? I would really appreciate any help!