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.
Depending on the age you should look at the capacitors on the one that won’t power on.
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.
No power probably means a missed connection. Check the SWI PSU switch, check your front headers, make sure you remembered the 12v CPU 4-pin power, check for loose screws.
