Red error message on boot. No audio output

[HonestOpinion]

Have you tried recovery mode? Hopefully you have a backup already. Instructions here:

Recovery Mode - factory reset

The recovery procedure has been posted elsewhere but it deserves its own topic and the full text from the manual describing the options that pop up on the recovery screen. Not that I have had to use it, but I thought posting the procedure for forcing a factory reset (recovery) here might be useful to someone in the future if they can remember to search for “Recovery”. You might use this after a catastrophic crash where your QC is not performing properly. This procedure is straight from the 1.4 …