Tips for getting lost system hibernation back

By default, Vista automatically turns on Hybrid Sleep's power management mode, a low-power sleep state that protects open programs and documents while the computer is asleep. If you're using a laptop, the benefits of enabling hibernate mode are even more obvious. Because the hibernation state on the laptop doesn't require any power to save open documents and programs, Vista can automatically go to sleep when the battery reaches a very low level. .

However, there may be no option to see "Hibernate" under the power option of the Start menu. There is no "Hibernate" option on the function keys. The reason may be the following: The computer is in hardware. Do not support hibernation, hibernation is disabled by the system administrator, mixed sleep is turned on, and so on. Experts can follow the steps below to retrieve the disappearing "hibernation" function.

Step 1: Confirm the support of the computer for hibernation

First, we need to confirm whether the computer supports the hibernation function, select "Accessories→Command Prompt" from the Start menu, right click Select "Run as administrator", you may need to enter the administrator password or UAC confirmation, and then manually enter the following command:

powercfg -a

This parameter can report all the system The available sleep state, and try to report the reason why the sleep state is not available. After execution, the result will be displayed. It can be clearly seen from the above that the computer itself supports hibernation. Use the command "powercfg -devicequery s4_supported" to list all current A device that supports hibernation (Figure 1).

Figure 1

Step 2: Turn off Hybrid Sleep

From the Control Panel, go to the “Power Options→Edit Plan Settings” window, click “Change Advanced Power” here. The "Settings" button will open the "Power Options" dialog box, expand "Sleep" and select "Allow Hybrid Sleep". The default setting item is "Open", please change to "Close", then click on the lower right corner of the dialog box. The "OK" button makes it effective.

Step 3: Enable Hibernation

Still operate at the command prompt. Manually type the following command: powercfg -h on, it will take effect immediately after execution, and it does not need to be restarted. System, now we can see the hibernation option in the drop-down menu of the function key in the lower right corner of the start menu, and the hiberfil.sys hibernation file will appear in the root directory of the disk where the system is located. Its header and physics The memory capacity is equivalent.

After the above processing steps, I believe that our system already has a sleep function.