lasync.blogg.se - Imac keeps freezing late 2016

I tried resetting the NVRAM and it still loads halfway and then shuts down.

Yesterday I took out the 2x4GB ram sticks and made sure the stock 2x2GB sticks were properly seated.

I left it unplugged over night and tried starting up this morning and I get the same thing.

I've tried Safe Mode, resetting the SMC, option, etc.

I tried resetting the NVRAM and it just shuts down.

I tried this about 5 times and it did the same thing.

I went back to my iMac and plugged the USB drive in, turned on the iMac, and held down option (expecting that it would give me the option to boot from the USB Yosemite Installer) and it chimed, the apple logo came on, the loading bar got to halfway, and it shutdown.

I downloaded Yosemite on my MBP and made a bootable USB drive for it.

I decided that I didn't have anything on the computer that I desperately needed so I was just going to reinstall Yosemite.

I tried just starting the computer up normally without holding anything down and it would do the same thing.

I clicked on the Samsung Partition and it loaded about halfway then shutdown.

It showed that I did not have a recovery partition (even though I remember having one in the past). I held down the power button until it shutdown and the powered it back up holding option.

I restarted the computer and held down CMD+R and nothing happened, it just stayed on the white screen.

I went to Disk Utility and tried Verifying the Disk and it gave me an error saying that it could not be verified and that I would need to open it up in Recovery Mode.I did some googling and it seemed like I needed to run First Aid on the SSD.I looked in the Activity Monitor and I kept getting CrashReports that were taking up 75% of the system. Photoshop finally opened but Mozilla did not. When I finally logged in I opened up Photoshop and Firefox and they both just bounced on the task bar for about 2 minutes.Next I reset the NVRAM 3x and this made a significant improvement.This made the boot time a little bit faster, maybe 2 minutes but it still wasn't acceptable. Next I shutdown the computer and restarted the SMC.I did this and restarted but the boot time was the same.

I looked at some forums and saw that I should make my SSD my primary boot drive.I turned on the iMac yesterday and the Startup was VERY SLOW, like 5 minutes.I haven't used the iMac in about a month as I have a Macbook Pro from work that I use primarily.128GB Samsung SSD installed in place of Optical Drive.Late 2009 27" iMac Intel Core Duo 3.06ghz.I get a chime then the Apple logo appears, then the progress bar gets to about halfway, then it shuts down.