Well, kinda.
Have two computers - my main one which has a failing internal drive (doesn’t contain crucial stuff) and an old Linux machine which…has a failing internal drive.
Took them both out of their corners and blew the dust out - so much dust! Reseated the cables, moved some things around, and plugged 'em back in.
The main computer has the same problem as before, so I’m recovering as much data as I can before swapping out the dead drive.
The Linux computer won’t even power on now. Gonna have to look at that this weekend.
EDIT: The Linux machine is back. Turns out the power plug I used for the internal drive is…questionable. Grabbed a different one and it came up fine. Well, fine to the point of recovery at least.
If it was manufactured any time before 2009, probably. I haven’t seen many leaky caps on devices made since then.
OP should look for the capacitor bulging, mostly from the top, or for oily fluid leaking from the bottom.