Screen Darkens on Shutdown
Hello - I just installed Windows 7 today and seems to be running OK. I just have been noticing on shutdown that the screen darkens for a moment as it shuts programs and processes that are running. Over the darkened screen it will sometimes show the name of the program that might not be shutting down properly. I have seen this screen at times in Windows Vista but it seems more common in Windows 7. Does it indicate a problem with the O/S or is it normal?Thanks - Marvin
January 8th, 2010 7:55am

Hi Marvin, This type of “darkened screen” is normal since certain program may not closed when you try to shut down the system, and Windows 7 will try to close those programs automatically in order to avoid any potential issues. If you would like to speed up the close, you have to do manually through the Registry. Follow those steps 1.Cut down latency time of Services Open the Registry Editor, locate the following registry entries: HKEY_LOCAL_MACHINE \ System \ CurrentControlSet \ Control In the right panel, you will see a "WaitToKillServiceTimeout" of the registry. Double-click to modify it and set the default value 20,000 (in milliseconds) to a smaller value such as 5000 or even 1000, and so on. 2.Cut down latency time of Apps and Processes Situation's same as the services. System won't close the running apps untill the latency time is over. So, we can speed up the shudown progress by shorten the latency time. Navigate to: HKEY_CURRENT_USER \ Control Panel \ Desktop Double-click on the right side of the panel "WaitToKillAppTimeout", set the default value 20000 (in milliseconds for the same) to a smaller 5000 or 1000. In the right side of the panel, still there is one called "HungAppTimeout" which is the time to wait for not responding apps to close. Set the default "5000" to "1000." Then, in the following registry branch: HKEY_USERS \. DEFAULT \ Control Panel \ Desktop \ Repeat the above operation, that is to modify the value of the registry "WaitToKillAppTimeout" and "HungAppTimeout" 3. Force Auto End Tasks During Shutdown and Log off Find the following registry branch: HKEY_CURRENT_USER \ Control Panel \ Desktop registry Find "AutoEndTasks" and set the default value "0" to"1" . I use those methods and have not had any problems. Your experience may vary. However, it should be emphasized that, "WaitToKillServiceTimeout", "WaitToKillAppTimeout" and "HungAppTimeout" are very important and essential in windows. Inproper modification will lead to Instability. it is dangerous to set any of the following registry value to "0".
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January 11th, 2010 9:39am

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