Sony VGN-A170 - Manual (Page 241)

Why doesn't my computer enter Hibernate mode?
You may first need to enable Hibernate mode. Follow these steps:
1. Click Start on the Windows ® taskbar, and click Control Panel .
2. Click Performance and Maintenance , and click Power Options . The Power Options Properties window
appears.
3. Select the Hibernate tab.
4. Click to check the box next to Enable hibernation .
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