All our windows are fully customisable, giving you the option to create something you could have only dreamed of. Our expert team can elevate some of the existing features of your space to ensure your new purchase complements them nicely. Whatever your style, we call install custom made windows to match. Our cost-effective solutions are designed to last for decades. Invest in our beautiful products to elevate the performance of your space. Packed with the latest features and technology, our innovative windows will dramatically improve the thermal efficiency and weatherproofing of your home. One symptom that has been noted if this condition is true is that the DWM, or Desktop Window Manager process will consume an ever increasing amount of memory, as displayed in Task Manager.Enhance the look and feel of your Thame property with our ultra-modern window designs. That layer of software would need to be uninstalled or updated to prevent the blocking condition in the Desktop Window Manager. If you are not sure of which drivers to install, contact the vendor of your computer hardware for assistance in locating an updated display driver package.Īnother solution is to discover what layer of security software is causing the temporary blocking, which renders the screen black and therefore unusable.In some cases, you may be offered updated video drivers by running Windows Update.At this point you can go to the Internet web site of the vendor, or the vendor of your computer to locate updated drivers.The item called "Name" should indicate the type of display adapter. The right-hand section of System Information should now display information about the display system in the computer.On the left-hand section called System Summary locate Components, and under Components locate and click on Display.The System Information tool should appear. Click Start, and in the Search Programs and Folder text box, type in MSINFO32 (without quotation marks) and press ENTER.You can determine the manufacturer of the display adapter by following these steps: Updated display drivers may resolve this issue. To return the settings for the Desktop Window Manager Session Manager service to normal via the CMD line: sc config UxSms start= auto Click the Apply button, and then click the OK button.Īlternatively, you can run the following commands from an elevated CMD prompt to set the service properties of the Desktop Window Manager Session Manager service to not running and disabled: net stop UxSms.Locate and click the button labeled "Stop".Locate the Startup type dropdown and change the value to "disabled".Locate and then double-click the Desktop Window Manager Session Manager service.Click the Start button, type services.msc and then press the ENTER key, or click the icon that comes up under Programs in the Instant Search box. ![]() Disabling this service will turn off the "Aero" graphics display feature, which will disable certain features such as Aero Peek, Aero Snap, Aero Shake, and so on. ![]() ResolutionĪ temporary workaround is to Stop and Disable the "Desktop Window Manager Session Manager" service. CauseĪ problem with some layer of security software causes the Desktop Window Manager to wait for an unspecified amount of time. The machine isn't "hard-locked", as periodic disk-drive activity may be noted from the disk-drive indicator light on the computer, if so equipped. A person unlocks the computer by entering their user credentials.Īfter the credential is entered, the screen goes black, and remains black for as much as 10 minutes or longer.The computer is locked and left undisturbed long enough for the screen to go black, which is 20 minutes with the default power policy of "Balanced".The Windows Vista or Windows 7 computer is subject to additional security restrictions and security software, such as might be the case in the enterprise, or with mandated security settings and software such as DISA or DoD requirements.A Windows Vista or Windows 7 computer is running the "Aero" graphics mode.This article provides a solution to an issue where Windows black screen when unlocking a computer.Īpplies to: Windows 7 Service Pack 1 Original KB number: 2431700 Symptoms
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