Computer randomly shutting down following RAM and Sierra upgrade
I am working on a family member's computer and recently updated it to Sierra and upgraded by swapping two 2 GB RAM modules for 4 GB modules (4 GB up to 12 GB total).
The plan is also to upgrade the HD or swap the CD drive for an SSD to make a Fusion drive. However, after the upgrade, I've been having shutdowns of the machine. It boots fine and loads Sierra. Then it will load a webpage or two and then shutdown. It has also shutdown when trying to copy files to it. I tried to copy the details of the error log, but the computer shut down after copying them and before I could post them.
Any ideas? Is it something with the HD and I should just swap it out? Is it something more fundamental like the motherboard? Any input is greatly appreciated.
Is this a good question?