Win7 can not enter the sleep state problem solution summary (collection)

This article will help some friends to solve the problem that Win7
can't go to sleep. Please be optimistic about sleep instead of dormancy. I will not repeat what is sleep and sleep and their differences. You can go to Baidu Google, or there are many related posts in this forum.
The article is relatively simple to write, so that some of the whites who are not very proficient in the computer can also understand, the masters despise it.
The first thing to note is that whether you sleep, hibernate or shut down, it has a close relationship with your power management. So if your system can't sleep, the first one must first check the power management. Here is a command, the operating procedure is Start running the input CMD carriage return and then enter the powercfg space Ca carriage return to see if you are unable to sleep due to hardware or software problems. In general, there will be three sleep states of S1 S2 S3, and you will be prompted with this system firmware. Which kinds of sleep are supported, the following is divided into two aspects of hardware and software to check and solve.
If there are three sleep states after entering the command, the system firmware does not support it, it is probably because your motherboard does not have the sleep function enabled, so you have to restart the computer and enter your BIOS to operate, if anyone asks How to enter the BIOS? Ok, answer it. When the motherboard is self-tested after booting, the desktop is especially equipped with the DEL button. Many brands have their own BIOS, which will show which button to enter SET UP, some are F10, ESC, etc. This you have to watch it yourself, you have to be anxious, because the time is very short, the notebook also has different buttons to enter BiOS, after entering the POWER (power) item, find the S1 S2 S3 item inside, and open, Mostly, you can open S3, then save and restart.
If you enter VGA.EXE or DISPLAY.EXE or XXXXX.EXE after entering the command, it means that your hardware affects the power and can't sleep. In this case, it is mostly the driver problem. VGA and display are the graphics card driver. All that needs to be done is to update the relative driver. In this case, there is also a performance that the sleep option is gray.
If the following XXXXXX is displayed to prevent sleep, it may be a software problem. Some software you install can't sleep, so you can take one of them, or you want to sleep and uninstall the software, or Want software regardless of sleep.
The next step is quite strange. After entering the command, the system firmware supports sleep S1 S3. S2 is not supported (this is normal, everyone's basic is the same), but no other is displayed, the power is normal. Ok, look at the other.
First find the network adapter in your device management, drop down, your network card will appear, there is only one desktop computer, and the notebook has one more wireless network card. To do is double-click your network card and find the power management option will allow This device wakes up the computer, the checkmark in front is ticked off, and it is determined that this can often solve the problem that the notebook restarts after clicking the shutdown. Just in case, find the mouse and other pointing devices, also the power management, tick off the device to wake up the computer, as for the reason I think it is probably because of the driver problem.
If the above method can not be solved, it is that your machine is a ghost, haha, make a joke, my desktop is the application of the above method can not go to sleep, so I will also focus on the control panel In the hardware and sound power options, on your current power plan, select Change Plan Settings, pop up the dialog box, then select Change Advanced Power Settings, find Sleep in the pop-up dialog box, then click the drop-down, then click Allow Mixed Sleep. The default setting is on, you only need to change to off, then apply OK, and then try to see if your system can sleep.
The current situation is this, if some friends can't solve it, just leave a message for me.

2. http://blog.sina.com.cn/s/blog_4ba0876e0100qiub.Html

Recently encountered a strange phenomenon, click the "sleep" button in the start menu under Win7 I can't sleep normally. The phenomenon is that the screen will be turned off, but the hard disk USB device fan and so on are still running. When the mouse slides, it will return to the welcome screen.

I thought that this is not the correct setting. The problem, then one by one: BiOS settings are normal; all hardware drivers are installed correctly; the hybrid sleep in the power options has been turned off, and the timed wakeup is also turned off; all devices in the device manager "allow the device to wake up The computer has also been canceled. Enter "powercfg -a" in the DOS command line to show that the S3 mode is working properly. Finally, the most important thing is that if you leave the computer for a while, it can automatically go to sleep. , this shows that the sleep function itself works fine.

Inadvertently see a post, is to introduce how to let Win7 "sleep while downloading", the method is to open Win7 "away mode" through the registry, so go Checked the registry... Sure enough, this machine The "away mode" is turned on.

Open the "away mode" method: Enter HKEY_LOCAL_MacHINE\\SYSTEM\\CurrentControlSet\\Control\\Session Manager\\Power in the registry, and create a new "DWord 32" on the right side. Bit "value, named "AwayModeEnabled", and assigned the value 1.

As for closing the mode, just change the value to 0 or delete the key value.

In the "away mode" "Under, when you click "sleep", the hard drive and the network will not be turned off. The only device that is obviously turned off seems to be only the monitor. Under "Away Mode" you can continue to download overnight. But feel this The function is useless, the display will automatically turn off, and it will take up the system's "sleep" button. If the sleep function on your machine is not normal, you can also check if the "away mode" is turned on.

3. Patching and setting up to solve Win7 SP1 can't sleep problem

A month ago, the Windows 7 SP1 patch package was released. This patch package mainly focuses on cumulative updates and bug fixes, but as some people jok That way, SP1 fixes some bugs but Brought some other problems. For example, some users found that they could not put the computer into sleep mode after installing SP1.

The number of encounters with this problem is not much, but it is not just one or two. Soon, a member of the Microsoft Product Quality Group issued a document on TechNet confirming the existence of this problem.

Problem Symptoms

Windows 7 computers that can enter sleep mode and wake up normally. After updating to Windows 7 SP1, they may not enter sleep mode correctly (and may cause system death). The system is forced to restart by the power switch. After the restart, the error report that the computer was not properly shut down is displayed.

Solution:

1. Install kb2495523 Patch

Go to http://support.microsoft.com/kb/2495523 Click VIEw and requestfix downloads at the top of the page. The patch.

2. If the above patch still fails to fix the problem, you can try the following methods:

Enter the control panel system and power options;

Click on the right side of the preferred plan Change Plan Settings";

Then click on "Change Advanced Power Settings";

Find the "Sleep" option and expand it, set "Allow Hybrid Sleep" to "Off" and finally exit.

Note 1: If you can't find the "Allow Hybrid Sleep" option, you need to start the command prompt as an administrator and enter "powercfg -h on" to enter. This option.

Note 2: According to some user descriptions on the technet, set the "JavaScript Timer Frequency" under the last "Internet Explorer" in the above advanced power settings to "Maximum Power Savings", which can also be solved. Unable to enter sleep mode. However, this option will only appear after installing IE9. Users who have installed IE9 can try it.