both vol keys and power all 3 held down for a few seconds, should restart it. I saw this on xda as part of a discussion about the one x and how one would reset it if it locked up since it has a non-removable batt. I gave it a try on the inspire and it works, it will reboot it with the os booted, with the os booting, and from in recovery. I'm hoping it will help with a lockup too. If so, I'm just going to consider my battery non-removable since every single time I had to do a batt pull, all I have is just hope for the best and worry that this will be the one that breaks that cheap POS batt door.