Lenovo ThinkCentre M91 - Manual (Page 56)

power-management features to take effect when your computer has been inactive
for a specified duration:
Table 1. ENERGY STAR power-management features, by operating system
Windows Vista and Windows 7
Power plan: ThinkCentre Default
• Turn off the display: After 10 minutes
• Put the computer to sleep: After 25 minutes
• Advanced power settings:
– Turn off hard disk drives: After 20 minutes
– Hibernate: Never
To awaken your computer from a Sleep or Standby mode, press any key on your
keyboard. For more information about these settings, refer to your Windows Help
and Support information system.
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ThinkCentre Safety and Warranty Guide