Lenovo T530 insists on sleep mode

We have a Lenovo T530 running Windows 7 Pro SP1 64-bit.  No matter what settings we apply to the Power Options control panel, the computer goes into sleep mode after exactly 15 minutes of inactivity.  Can anyone tell us the path to the registry key that controls that behavior?  Or, frankly, anything else that would help us solve this problem?
lgottlieb45Asked:
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JohnBusiness Consultant (Owner)Commented:
Lenovo Windows 7 comes with its own Power Manager.

Look in Windows Power Management and determine what plan is being used. Make a note of it.

Now open Lenovo Power Management and make sure it is using the same plan. Check the plan settings to make sure they are set the same way.

The two plans (Windows and Lenovo) are likely conflicting. If you do not wish to use Lenovo Power Management, then you can uninstall it (Control Panel, Programs and Features).
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Michael-BestCommented:
Overheating and low battery power will also cause it to go into sleep mode.

You may wish to cosult the user manual.

This link is Lenovo ThinkPad T530 (English) User Guide.
http://www.manualowl.com/m/Lenovo/ThinkPad-T530/Manual/312684?page=166
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joinaunionCommented:
Click start then right click computer select properties.

Click on performance Information and tools(bottom left corner)
 Now click adjust power settings

On the selected plan click on change plan settings.

Now click on change advanced power settings.

Once the window pops up scroll down to Sleep.
Here you can change it to whatever you like for each setting.
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lgottlieb45Author Commented:
Problem resolved.  It turned out not to be a power issue at all, but rather a screen saver issue.  I had no idea that if the screen saver was set to "none" it could still blank the screen and then go directly to the logon screen, but that's what it was doing.  So once we specified a screen saver and changed the time threshold, everything is now behaving properly.  Thanks for the answers, everybody, but I mislead you all with my reference to sleep mode.  I'm not assigning points, but if you disagree let me know.
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lgottlieb45Author Commented:
Apparently it's possible for something in the registry to produce behavior that points a troubleshooter in the wrong direction.
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Michael-BestCommented:
My comment:  Should be considered in your decision.

Quote:

Michael-Best2014-08-05 at 07:10:06ID: 40240082

You may wish to cosult the user manual.

This link is Lenovo ThinkPad T530 (English) User Guide.
http://www.manualowl.com/m/Lenovo/ThinkPad-T530/Manual/312684?page=166
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