Macbook Pro Retina Early 2015 (bought refurbished, have no warranties) It had 121 gb storage and I wanted to up it a bit; bought SSD from OWC https://eshop.macsales.com/shop/ssd/owc/aura-pro-x2 with 240 gb. Short story - the change didn't work, but computer still works with my old SSD, so no, I didn't burn or damage anything. I'm writing this on it after switching back to old ssd. Long story - Since it is an easy change to do at home, I got all the tools and popped that baby open, grounded myself, disconnected battery, got out my old SSD and tried to put in the new one. FIRST problem: it didn't slide in place as easily as the original, I pushed firmly, but it sorta went in it's space, but there was no click or pop, like, you know, when things clickity clak in place (as the old/original ssd does). I assume it's just a tighter fit, compared the details of how it should look in place and it looked fine, screw could be screwed in neatly. Okay welp, got the battery connected, popped that lid back and gave it a go. Computer doesn't boot, so I was like okay, cue mild panic attack. I plugged the carger and it lit green so something is connecting. Held the boot button and it turns on with a chime. I panic 2% less now, screen is black, and then I hear a slight pssssht sound that sounds like it turned off. I panic again and it boots by itself, chimes, psssht, boots, chimes, psssht. All this time screen is black. Tried all the prams and srams and took a shot of whiskey (I didn't, but I wish I did). Nothing. Black. Chimes happening meaning it's rebooting itself in circles, meaning it's a software or hardware issue. Knowing what I did, it has to be hardware. After a couple dozen other panic attacks, frantic google searches on my phone, I decided I need to put my old SSD back to see if I just burned down my whole system or groped something I shouldn't have by accident. Before all this I decided not to erase my old SSD, so I would have my **** back just in case. So now I was changing back to my old ssd, praying to no one cause I don't believe in anything, plopped all this jazz together, put in a couple of screws so the butt doesn't fall off and tapped that power button. It chimes, shows apple logo, boots and works. Let's just say I was relieved... So. What was the problem? Was it that I didn't push it in well enough? Like it ended up being almost forceful and it wouldn't go any deeper (this sounds so bad), so what can I do? All the sizes, notches, info, details is correct and the product was right, but why did this happen? Should I try again? I'm a bit scarred for life now so? Help a girl out?