Well, my bedroom, not the garage--but I upgraded a computer without frying it.
I bought a Lenovo Ideacentre Creator Edition 5i with a 10th gen i5 and a Nvidia GTX1660 SUPER new back in 2021. The 12GB of RAM was pretty basic back then, and inadequate now. Put it off for two years as the case was rather cramped, but later found a YT video that shwoed a complete teardown--and it was really simple--unscrew the side panel, pop off the front, release the tab on the drive caddy, and put it aside. I cleaned it about two months back, and found it was as easy as I hoped to get apart. Looked at some RAM online, but never really did anything concrete.
I was surprised to find Walmart had a Kingston FURY 16 GB set (2x 8GB) on the shelf for $50 last week, and wanted to double check if it would work. Well, I didn't, really. Today, I went ahead and bought it.
First attempt didn't work, and I thought I'd fried it. The CMOS beeper was going nuts. Well, as it turns out, I just didn't have the RAM seated well enough. A bit more pressure, and they locked in.
After that--booted right up, and it DEFINITELY seems faster.