I’ve had my C140 hang up on me a few times, usually just after downloading songs from my PC. What has always worked for me is to pull the battery and reinstall it. But this time, the player is stuck in the hung state. I can power it on and it initializes and shows me the screen as though it’s ready to start playing, but at that point all buttons are dead and I can only power it off again by pulling the battery. In this state, it also does not connect to the PC either.
Is there some other button combo that effectively does a “hard reset”, even if it clears everything in memory? The player is unusable now.