dalchina confused the post by showing a screen shot of the wrong settings.

Yes, it has been removed, but the options are still available. I'm assuming you are trying to follow instructions for...

Yes, it has been removed, but the options are still available. If you expand Sleep, the System unattended sleep timeout is the 2nd option. And, by the way, I had to set mine to 999. 20 minutes...

Thank you stratowar! Like others, I registered on this site just to tell you how awesome you are! Mine still goes to sleep about once a week, but it's MUCH better than it was. To wake it up I go...