I've had this laptop for nearly a year now and recently it started getting a BSOD everytime i AFK for a couple hours.
I did not update drivers or did any other changes recently. Only things i can think of is the windows updates.
The issue you're having is with your Atheros wireless lan driver. Visit the manufacturer's site for the latest update to install. While there, update all the drivers for everything they offer. You have some really old ones that need it.