Vista system enables hybrid sleep method

        Hybrid Sleep in Windows Vista is a low-power sleep state that protects open programs and documents while the computer is sleeping.
"Sleep" saves any open documents and programs to memory and then puts the computer into a low-power state. However, if a power failure occurs, your work may only be lost if your work is only saved to memory.
"Hybrid Sleep" saves any open documents and programs to memory and hard drive, then puts the computer into a low-power state. The advantage of hybrid sleep is that Windows can resume work from the hard drive in the event of a power failure.
Operation steps
1. Click “Start” → “Control Panel” → “System and Maintenance” and click “Power Options”. As shown in Figure 1 Power Options:

Figure 1: Power Options
2. In the Power Options window, click Change Plan Settings under Selected Plans. This article takes the example of selecting the “balanced” plan. As shown in Figure 2 Change Plan Settings:

Figure 2: Change Plan Settings
3. On the Change Plan Settings page, click Change Advanced Power Settings. 3 Change advanced power settings shown:


Figure 3: Change advanced power settings
4. In the "advanced settings" tab, expand the "sleep", then expand "Allow "Mix sleep", click "Settings" under "Allow mixed sleep" and select "Open". As shown in Figure 4 Advanced Settings:

Figure 4: Advanced Settings
5. Click the “OK” button in Figure 4 and the Power Options window will close. Return to the Change Plan Settings page and close it.
6. After completing the above steps, the system has enabled the hybrid sleep function.