The CMUSBDAC.sys error is a System error that arises when your system fails to operate the command safely. It flashes an error message “SYSTEM_THREAD_EXCEPTION_NOT_HANDLED” and shows a blue screen of death as well. CMUSBDAC is an audio driver used to manage communication between USB audio devices like microphones and the system’s OS. It appears when your drivers get corrupted or malfunctioned or it may be infected by spyware, viruses, or harmful malware. Source:- How to Fix CMUSBDAC....