Sorry for the late answer, I am not receiving notifications for some reason.
The root partition is 507GB long and it shouldn’t be anywhere close to full since I’d just installed fedora. And even if it were abnormally small/full, the pen should still have worked, so the issue has likely nothing to do with something like a partition.
Honestly, the fact that the pen stopped booting too, but only in my pc (it works in other pcs) makes this by far the strangest issue I have seen to date, so it could have had an equally strange cause. Is there any specific reason why you asked this question :)? I’d be happy to dig further.