Presumably there's some connection between that and the non working switch.
No. I think you are being lured (as one is so often) by two completely unrelated faults, which happened at roughly the same time "so they must be connected" one assumes.
One was a hang-up in the PC itself, the other is a cheap and nasty construction between the plastic button and the microswitch.
Suggest you tackle the second one first ! as it's easier.