Hello all, This issue started about a little over a month ago after I finally updated from Mavericks to El Capitan. I'm not saying the update is correlated with my issues but just wanted to point out that it literally started happening a day or two after I installed El Capitan. Anyhow these are the issues: At first it started when I would leave my computer to sleep while plugged in for an extended period of time (overnight while I sleep, leaving the house for a few hours). The second I would get out of sleep mode or open the lid again, the computer would be returning from hibernation. I have never used hibernation on my MBP or my previous iMac and this was doing it every time I would let it charge for a long time. The crashing began a short time after the hibernation issues. They would happen randomly while using, never during start up. It would be from random movements, such as moving the laptop from a table and walking with it to place it down on another table. And it would just crash in general. No program overload or anything like that. As much as 2 weeks ago the crashes began happening more frequently. And I've been having to restart my MBP a few times a day due to the crashes. About 2-3 days ago, the crashes began happening almost all the time. The slightest movements while having it on my lap and typing, from just to turn the computer slightly to align it, would have it crashing. It is now an issue where starting up my MBP is now a 5% success rate. I've had to get creative trying to get it to JUST the loading bar. Tilt the computer sideways slightly, lift it etc. just to try and get it to load. I got lucky just holding my iPod Touch under the left side and it finally loaded all the way. Today, I was going to bring it in to geeksquad (lol I know but the nearest Apple location is a few hours from me) because my Best Buy Extended Warranty expired, and I wanted to try something. I had already backed up my data 2 days ago before the real frequent crashing began, so I finally got it to boot into disk utility after 20 tries. I cleaned the disk, did first-aid, and then re-installed OS. And alas it started working, I could lift it and move it to another table without it crashing. I thought maybe after the first-aid it was a disk issue (it said there were sector errors and then it said it was fixed) so I decided to restore the backup. Hours later I come home and it starts the same issues again. A few minutes ago I finally cleaned and re-installed OS again and it is booting up. It's still crashing, but not as frequently as before I cleaned and re-installed. It's back to about a 50% success on boot up rate. I'm ready to take it back to geek squad and if it costs too much to fix, I may just get a new MBP but I was hoping I could avoid it. Is this an issue possibly with the hard drive? I have a Samsung EVO 250 SSD that I was planning on changing out the HDD for when I bought the laptop but never got around to it. If this is an HDD issue then a clean swap should fix the problem? Is this a RAM or motherboard problem? How about battery? I've tried posting on Apple discussion but that place isn't very helpful in this instance. I'd like to try everything possible without having to send to Apple or Geeksquad to fix and replace. I've only had the laptop for maybe less than 3 years and only this past year when I sold my iMac did I start using it more frequently. I'm typing this right now with the MBP on a solid table and it's taken me 3 computer boot ups to type this, finally saved a few drafts in email then posted it. I'm sure as soon as I try to move or lift this thing it will crash again.