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Thank you. &nbsp;Somehow, the power settings had gotten configured to turn off the display after twenty minutes. &nbsp;I set it to &quot;never&quot;, which I believe was its previous setting. &nbsp;I'll post again after an hour of inactivity. &nbsp;<br />
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Update 11/3/16 -- The issue appears to be resolved. &nbsp;Thanks for your guidance.
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Thank you.  Somehow, the power settings had gotten configured to turn off the display after twenty minutes.  I set it to "never", which I believe was its previous setting.  I'll post again after an hour of inactivity.  

Update 11/3/16 -- The issue appears to be resolved.  Thanks for your guidance.

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Running Windows 7 Professional SP-2, &nbsp;a screen saver is configured to start after sixty minutes of inactivity. &nbsp;This has worked fine for many years, until two days ago, when it stopped working, and now there is just a black screen after sixty minutes. &nbsp;I tried re-configuring the screen saver, using the same settings, without any improvement. &nbsp;Experimenting, I found that it will work if the delay is set to one minute, but not to sixty.
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Running Windows 7 Professional SP-2,  a screen saver is configured to start after sixty minutes of inactivity.  This has worked fine for many years, until two days ago, when it stopped working, and now there is just a black screen after sixty minutes.  I tried re-configuring the screen saver, using the same settings, without any improvement.  Experimenting, I found that it will work if the delay is set to one minute, but not to sixty.

Screen saver does not launch

Windows 7 is an operating system from Microsoft. Features include multi-touch support, a redesigned Windows Shell with a new taskbar, referred to as the Superbar, a home networking system called HomeGroup, and performance improvements.