For the last 2 days, my PC has been turning off on its own and doesn't boot up after a few tries. I'm looking at a few suspects currently but have no idea what really would be considered a good voltage range. I did remove a stick of RAM and the PC booted back up but I still need to test if it's the RAM that's bad or the slots or the mobo itself so I'm gonna keep it with 3 sticks for now and see how it goes for a few days.

But, I also want to check if my voltage readings are normal according to HWMonitor. My PSU is kind of old, like about 6-7 years old but never had issues with it before. I don't hear any loud fan noises and I clean out the grate.

https://imgur.com/a/QA39feQ

Can't upload images to this post.