My HTPC (yes I live in 2010) is (was) a little SFF OptiPlex 9xx with a half-height GT1030 for 4k@60hz. During the move, I guess that card shifted a bit and I set everything up last night, turned it on, and walked away for a couple hours. When I came upstairs (my office is in the basement now) I smelled some strong plastic/electrical fire, and kept hearing a "thump...thump...thump". I quickly determined it was the HTPC, and the fan of the GPU was hitting the power supply. It had worn through the sheath of the Dell's PSU and caused a bit of a short/meltdown. Mos the the graphics card was melted, and it seems like the whole PC was hosed (it won't turn on anymore).
So, that super sucks. Those PCs are cheap, but I had it setup nice with some upgrades (16gb ram, i5 3770s, 256gb samsung sata SSD, gigabyte GT1030 half-height) and I'm not sure if any of it is salvageable. Hopefully the CPU, ram, and SSD are still good so I can just order a cheapo replacement PC and a new GT1030