|
The computer wakes unexpectedly
(Microsoft Windows Vista->System issue)
Symptom:
the computer wakes up unexpectedly and enters Sleep Mode as the Balanced Power Plan is implemented on the Windows Vista Ultimate system. This issue did not occur on the Windows Media Center Edition system.
Cause:
Generally, this behavior could be caused by incorrect settings, a device driver, network activity or hardware issues on the computer. Please understand that if a specific device is determined to be the cause of the system waking, and you wish to continue using that device to wake the system, we may need to consult the device manufacturer for further assistance.
Solution:
To troubleshoot this issue, I suggest we first perform these steps:
Please unplug all non-essential devices to test the computer's performance, such as an external modem or other peripheral equipment. In this situation, the system will only use basic hardware devices and allow for more stability. If it is inconvenient to unplug the devices, we can disable them in Device Manager. Please refer to the following steps:
Note: If the UAC (User Account Control) window prompts for permission to continue, please click Continue.
Step 1: Device Clean Boot
====================
1. Click the Start Button, type "devmgmt.msc" (without quotation marks) in the Search bar and press Enter.
2. Expand "Sound, video and game controllers".
3. Right click on your sound card and then click "Properties".
4. In the dropdown menu of Device Usage, please choose "Do not use this device (disable)" and click OK.
5. Please use the same method to disable other non-essential hardware such as: internal modem, network card and CD-R drive. Please note some devices such as video adapters are not available to be disabled.
Then, please restart the computer to check if the system wakes up from Sleep Mode automatically. However, if this behavior persists, let's try Step 2.
Step 2: Clear "Allow the computer to turn off this device to save power" option
===========================================================
1. Click the Start Button, type "cmd" (without quotation marks), right click on the "Cmd.exe" in the search result list and select "Run as administrator".
2. Type "powercfg –devicequery wake_armed" (without quotation marks) in the open window and press Enter Key.
3. A list of the configured devices to wake the computer will be received, then please type the following command to disable them in order to avoid waking up the computer.
Powercfg -devicedisablewake "devicename"
Note: "devicename" is a device name listed as a result of running the first command.
For example, if the network card "Broadcom NetXtreme Gigabit Ethernet" is listed, we can type the following command to disable it and press Enter.
Powercfg –devicedisablewake "Broadcom NetXtreme Gigabit Ethernet"
4. Please repeat the steps for other devices in the list.
5. Reboot the computer and check this issue again.
|
Home
Affiliate program
Remote PC repair
MySpace tool 
Forum
Download
Document
Help