Especially if you've never had a crash and don't know what it looks like.
I'll give it to Window's system they do let you know with the BSOD (Blue Screen Of Death) that something has seriously gone wrong which is how I had to find out in a search on how to tell if my Mac Mini in OS 10.6.8 actually crashed or my processor's kernel was being hacked and forcing me to either shutdown or log in just from listening to Amazon's mp3 music samples while switching to YouTube page to hear the entire song both sites using HTML5 (No Flash).
Doing this for any length of time caused my Mac to get quite warm with the first occurrence flashing a gray square box in the center of my display as a gray curtain top to bottom role down dims my screen with a warning that my computer experienced bad things (or something like that in different languages) and that it is going to shut down. I thought I'ld been hacked and tricked into restarting and logging back in so my password could be recorded or that my aging computer just died where I'ld lose all my xmp edited Raw images.
Couldn't really tell. So I just hit the off switch on the Sentry power strip my Mac was plugged into, unplugged my Ethernet cable, rebooted, logged in and tossed my browser's cache and history just in case, connected Ethernet and restarted. All was fine.
After a week went back to Amazon/YouTube music sampling and this time my Administrator Login window I get when I first boot the Mac just popped on the middle of the screen. No shut down. Again, I just hit the off button on the power switch and did the same as stated above. All is fine.
I backed up my images between these two incidences so I'm safe if my aging Mac is going down for the count. Can't tell.
As said above in a google search on why this happens with Amazon/YouTube, a forum poster with a brand new and loaded Windows Lenova laptop had the BSOD while on those two sites sampling music/videos but didn't really offer any answers except a suggestion to update graphics and audio drivers. No feedback on whether this fixed the issue.
Appreciate any feedback on this especially if you've experienced the same whether on Mac or Windows.