Hi, folks! Gird your grid for a very long OP describing a truly baffling puzzle. I apologize for the length, but I've spent a great deal of time and effort researching this issue and experimenting and testing various hypotheses, so I've provided a lot of details which I hope will allow you...
browser issue
dell laptop
device management
event logs
external power
hd playback
hdmi output
microsoft support
netflix
power issue
remoteviewing
shutoff problem
silverlight
software conflict
streaming video
system crash
temperature check
troubleshooting
video playback
windows 7