Re: Open up!
"Pretty confident RAM DIMMs in laptops went away forever about half a decade ago..."
Uh, no. More laptop models than not have DIMM slots. The ultra-slim machines have soldered-only RAM because there's just no room for the slots. It's a lot faster (and cheaper) to replace a DIMM with a bad chip than it is to get a system board transplant from the manufacturer's service company.