I'm not a regular windows user, so I may be wrong, but it's my understanding that, by default, windows will keep the computer in "sleep" mode if it's plugged in

I'm not a regular windows user, so I may be wrong, but it's my understanding that, by default, windows will keep the computer in "sleep" mode if it's plugged in, and pretty quickly put it in hibernate if it's asleep and unplugged. The way I found out is this one time I left work with my laptop under windows and asleep.When I arrived home an hour later, it had to go through the full bios setup (which you can't miss since it's ridiculously slow) and then it went and booted Linux (it's the default boot setup). When I rebooted back to windows, I found my previous stuff open. Since this happened again a few times, I figured it was normal behavior. My default Linux install won't automatically hibernate while asleep as long as the battery is above some threshold, like 10%. And since the computer doesn't support S3, only "modern standby", it will chew through the battery like no tomorrow.