problem with Windows 7, the system does not go to sleep, he began the procedure but when it is off, it comes back immediately. I checked in Device Manager authorized devices to wake the computer is there a way to know which device or which program wakes up windows?

can u check Power Button action in start menu tab? is there an option set to sleep?

Hello SSMICRO, Please first uninstall all unnecessary devices and see if the issue can be resolved. Also, test in Clean Boot. If the issue disappears in the Clean Boot enviroment, we can use a 50/50 approach to quickly narrow down which entry is causing the issue. Besides, please use Powercfg command to check this issue. To do that, refer to the steps below: 1. Click Start, type "cmd", right-click "cmd.exe" in the search result list and select "Run as administrator". 2. Type "powercfg -devicequery wake_armed" in the open windows 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 one by one and see if the culprit can be found. (We may test the result after disabling each device.) 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. What's the result now? For more information, please refer to Powercfg Command-Line Options. If the issue still occurs, please type the following command and post the result for further research. Input command powercfg -lastwake in the elevated prompt windows and press Enter key. Also, please check Event Logs: Start - type Event Viewer - Check the "Power Troubleshooter" enteries in "Windows Logs - System" Regards, Miya TechNet Subscriber Support in forum. If you have any feedback on our support, please contact tnmff@microsoft.com This posting is provided "AS IS" with no warranties, and confers no rights. | Please remember to click "Mark as Answer" on the post that helps you, and to click "Unmark as Answer" if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

Hello SSMICRO, Please first uninstall all unnecessary devices and see if the issue can be resolved. NO Also, test in Clean Boot. If the issue disappears in the Clean Boot enviroment, we can use a 50/50 approach to quickly narrow down which entry is causing the issue. NO Besides, please use Powercfg command to check this issue. To do that, refer to the steps below: 1. Click Start, type "cmd", right-click "cmd.exe" in the search result list and select "Run as administrator". 2. Type "powercfg -devicequery wake_armed" in the open windows 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 one by one and see if the culprit can be found. (We may test the result after disabling each device.) 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" NO, ethernet card as been disabled and still same problem 4. Please repeat the steps for other devices in the list. no other 5. Reboot the computer and check this issue again. What's the result now? For more information, please refer to Powercfg Command-Line Options. If the issue still occurs, please type the following command and post the result for further research. Input command powercfg -lastwake in the elevated prompt windows and press Enter key. Also, please check Event Logs: Start - type Event Viewer - Check the "Power Troubleshooter" enteries in "Windows Logs - System" can't find... Regards, Miya TechNet Subscriber Support in forum. If you have any feedback on our support, please contact tnmff@microsoft.com This posting is provided "AS IS" with no warranties, and confers no rights. | Please remember to click "Mark as Answer" on the post that helps you, and to click "Unmark as Answer" if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

Hi SSMICRO, Since you mentioned no other device is listed, we need to further look at the issue. I would like to know the following: 1. What's the model of your computer? 2. When did this issue happen? If it happened recently, did you update some programs or change hardwares? If it happened right after a fresh install, how did you install that Windows 7? OEM verison? 3. Is it a stand-alone computer or domain-joined one? Are there any group policy settings to disable the sleep mode? Check the GP under Computer Configuration - Administrative Templates - System - Power Management Additionally, I suggest you update the BIOS and the graphic card driver to the latest one to test the issue. Regards, Miya TechNet Subscriber Support in forum. If you have any feedback on our support, please contact tnmff@microsoft.comThis posting is provided "AS IS" with no warranties, and confers no rights. | Please remember to click "Mark as Answer" on the post that helps you, and to click "Unmark as Answer" if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

How's it going? Please feel free to give us any update. Regards, Miya TechNet Subscriber Support in forum. If you have any feedback on our support, please contact tnmff@microsoft.comThis posting is provided "AS IS" with no warranties, and confers no rights. | Please remember to click "Mark as Answer" on the post that helps you, and to click "Unmark as Answer" if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

As this thread has been quiet for a while, we assume that the issue has been resolved. At this time, we will mark it as "Answered" as the previous steps should be helpful for many similar scenarios. If the issue persists, please feel free to reply this post directly so we will be notified to follow it up. Thanks for your understanding and cooperation! Regards, Miya TechNet Subscriber Support in forum. If you have any feedback on our support, please contact tnmff@microsoft.comThis posting is provided "AS IS" with no warranties, and confers no rights. | Please remember to click "Mark as Answer" on the post that helps you, and to click "Unmark as Answer" if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.