Ok, so I was exporting 4 1080p videos at the same time when a loud alarm started. This was 100% a hardware emergency alarm that was coming from the mac. The screen froze and i had to force shutdown my Mac. My specs are: 2011 13 inch base MBP model, 2.3 i5 dual, 8gb ram, samsung 830 128gb ssd. Any idea what hardware component was causing this alarm and what was it?