So basically when you say "exactly the same thing" you mean "something vaguely similar, but rather than find out if it really is the same thing or attempt to diagnose the problem, I'm going to list a whole bunch of instructions, some of which may not even be necessary, that might have solved the problem for me, or might have been something I did that coincided with the problem being resolved for other reasons?"
Seriously, don't give instructions until after you get details about the problem unless it's very plainly a known Rockbox issue. Then diagnose it, and find a specific solution. Do not offer shotgun approaches - for example in your case can some of the processes be left on automatic? Are you 100% sure it's necessary that all be disabled? Did the time it stopped also coincide with a Rockbox update (one of the primary reasons someone attaches the device to their PC) and possibly simply be the result of that? Etc, etc.
Diagnose, then offer solutions.