cayin iha-6 mk2 amp malfunction

Hey guys, I own a cayin iha-6 mk2 amp and it had been working great until recently. After between 3-6 min of music it suddenly stops working and the white light on the knob flashes. Even when i unplug my amp and plug it back in the issue persists. Only when i close my computer and reboot it does it work, which leads me to believe that the issue may be with my DAC and not the amp? When I tried looking up on the manual it just says that rapid flashing means theres a machine malfunction. Hope someone could shed some light into why this is suddenly happening.