Laptop restarting instead of sleeping

[wlvtrojan]

My laptop (Sager NP8153) restarts after idling for 10 minutes instead of sleeping. My settings instruct the computer to turn the screen off after 5 minutes and sleep after 10. What could be making it restart instead of sleep?

 

[rgd1101]

MERGED QUESTION
Question from wlvtrojan : "Laptop restarts instead of sleeping after idling"

My laptop (Sager NP8153) restarts after idling for 10 minutes instead of sleeping. My settings instruct the computer to turn the screen off after 5 minutes and sleep after 10. What could be making it restart instead of sleep?

 

[jsmithepa]

I suggest sleep to SUSPEND, do not hibernate.