I haven't chosen the S3 option in BIOS but left S1 in Auto. I configured it in Windows as an experiment 2 min Screensaver, 3 min Monitor off, 5 min standby and 10 min Hibernate. after 5 minutes the machine turned itself off and I had a flashing green light. The only way to reactivate was by powering up. This immediately bought wWindows back. Is this correct for standby and if so, what would hibernate have done. Or cannot you use both. Silly question maybe to you guys, but I need guidance please.